diff --git a/src/main/java/com/googlesource/gerrit/plugins/importer/AddApprovalsStep.java b/src/main/java/com/googlesource/gerrit/plugins/importer/AddApprovalsStep.java
index b541966..267925f 100644
--- a/src/main/java/com/googlesource/gerrit/plugins/importer/AddApprovalsStep.java
+++ b/src/main/java/com/googlesource/gerrit/plugins/importer/AddApprovalsStep.java
@@ -18,7 +18,6 @@
 import com.google.gerrit.common.TimeUtil;
 import com.google.gerrit.common.data.LabelType;
 import com.google.gerrit.common.errors.NoSuchAccountException;
-import com.google.gerrit.extensions.common.AccountInfo;
 import com.google.gerrit.extensions.common.ApprovalInfo;
 import com.google.gerrit.extensions.common.ChangeInfo;
 import com.google.gerrit.extensions.common.LabelInfo;
@@ -29,8 +28,8 @@
 import com.google.gerrit.reviewdb.server.ReviewDb;
 import com.google.gerrit.server.IdentifiedUser;
 import com.google.gerrit.server.notedb.ChangeUpdate;
-import com.google.gerrit.server.project.ChangeControl;
 import com.google.gerrit.server.project.NoSuchChangeException;
+import com.google.gerrit.server.query.change.ChangeData;
 import com.google.gwtorm.server.OrmException;
 import com.google.inject.Inject;
 import com.google.inject.assistedinject.Assisted;
@@ -57,7 +56,7 @@
   private final ChangeUpdate.Factory updateFactory;
   private final ReviewDb db;
   private final IdentifiedUser.GenericFactory genericUserFactory;
-  private final ChangeControl.GenericFactory changeControlFactory;
+  private final ChangeData.Factory changeDataFactory;
   private final Change change;
   private final ChangeInfo changeInfo;
   private final boolean resume;
@@ -67,7 +66,7 @@
       ChangeUpdate.Factory updateFactory,
       ReviewDb db,
       IdentifiedUser.GenericFactory genericUserFactory,
-      ChangeControl.GenericFactory changeControlFactory,
+      ChangeData.Factory changeDataFactory,
       @Assisted Change change,
       @Assisted ChangeInfo changeInfo,
       @Assisted boolean resume) {
@@ -75,7 +74,7 @@
     this.updateFactory = updateFactory;
     this.db = db;
     this.genericUserFactory = genericUserFactory;
-    this.changeControlFactory = changeControlFactory;
+    this.changeDataFactory = changeDataFactory;
     this.change = change;
     this.changeInfo = changeInfo;
     this.resume = resume;
@@ -96,8 +95,8 @@
       if (label.all != null) {
         for (ApprovalInfo a : label.all) {
           Account.Id user = accountUtil.resolveUser(api, a);
-          ChangeControl ctrl = control(change, a);
-          LabelType labelType = ctrl.getLabelTypes().byLabel(labelName);
+          ChangeData cd = changeDataFactory.create(db, change);
+          LabelType labelType = cd.getLabelTypes().byLabel(labelName);
           if(labelType == null) {
             log.warn(String.format("Label '%s' not found in target system."
                 + " This label was referenced by an approval provided from '%s'"
@@ -112,7 +111,7 @@
           approvals.add(new PatchSetApproval(new PatchSetApproval.Key(change
               .currentPatchSetId(), user, labelType.getLabelId()), shortValue,
               MoreObjects.firstNonNull(a.date, TimeUtil.nowTs())));
-          ChangeUpdate update = updateFactory.create(ctrl);
+          ChangeUpdate update = updateFactory.create(cd.notes(), genericUserFactory.create(user));
           if (shortValue != 0) {
             update.putApproval(labelName, shortValue);
           } else {
@@ -124,19 +123,4 @@
     }
     db.patchSetApprovals().insert(approvals);
   }
-
-  private ChangeControl control(Change change, AccountInfo acc)
-      throws NoSuchChangeException {
-    return control(change, new Account.Id(acc._accountId));
-  }
-
-  private ChangeControl control(Change change, Account.Id id)
-      throws NoSuchChangeException {
-    try {
-      return changeControlFactory.controlFor(db, change,
-          genericUserFactory.create(id));
-    } catch (OrmException e) {
-      throw new NoSuchChangeException(change.getId());
-    }
-  }
 }
diff --git a/src/main/java/com/googlesource/gerrit/plugins/importer/CompleteProjectImport.java b/src/main/java/com/googlesource/gerrit/plugins/importer/CompleteProjectImport.java
index 2767f13..f5cabb9 100644
--- a/src/main/java/com/googlesource/gerrit/plugins/importer/CompleteProjectImport.java
+++ b/src/main/java/com/googlesource/gerrit/plugins/importer/CompleteProjectImport.java
@@ -112,6 +112,8 @@
           case REJECTED:
           case REJECTED_CURRENT_BRANCH:
           case RENAMED:
+          case REJECTED_MISSING_OBJECT:
+          case REJECTED_OTHER_REASON:
           default:
             throw new IOException(String.format(
                 "Failed to delete %s, RefUpdate.Result = %s", ref, result));
diff --git a/src/main/java/com/googlesource/gerrit/plugins/importer/GitFetchStep.java b/src/main/java/com/googlesource/gerrit/plugins/importer/GitFetchStep.java
index 132a36c..a3421d1 100644
--- a/src/main/java/com/googlesource/gerrit/plugins/importer/GitFetchStep.java
+++ b/src/main/java/com/googlesource/gerrit/plugins/importer/GitFetchStep.java
@@ -83,6 +83,8 @@
         case REJECTED:
         case REJECTED_CURRENT_BRANCH:
         case RENAMED:
+        case REJECTED_MISSING_OBJECT:
+        case REJECTED_OTHER_REASON:
         default:
           throw new IOException(String.format(
               "Failed to update %s, RefUpdate.Result = %s", targetRef, result));
diff --git a/src/main/java/com/googlesource/gerrit/plugins/importer/GroupsCollection.java b/src/main/java/com/googlesource/gerrit/plugins/importer/GroupsCollection.java
index bb692cd..c25f5b5 100644
--- a/src/main/java/com/googlesource/gerrit/plugins/importer/GroupsCollection.java
+++ b/src/main/java/com/googlesource/gerrit/plugins/importer/GroupsCollection.java
@@ -60,7 +60,6 @@
   }
 
   @Override
-  @SuppressWarnings("unchecked")
   public ImportGroup create(ConfigResource parent, IdString id)
       throws RestApiException {
     return importGroupFactory.create(new AccountGroup.NameKey(id.get()));
diff --git a/src/main/java/com/googlesource/gerrit/plugins/importer/ImportGroup.java b/src/main/java/com/googlesource/gerrit/plugins/importer/ImportGroup.java
index 7016c39..1279b56 100644
--- a/src/main/java/com/googlesource/gerrit/plugins/importer/ImportGroup.java
+++ b/src/main/java/com/googlesource/gerrit/plugins/importer/ImportGroup.java
@@ -41,6 +41,7 @@
 import com.google.gerrit.server.account.GroupIncludeCache;
 import com.google.gerrit.server.config.ConfigResource;
 import com.google.gerrit.server.config.GerritServerConfig;
+import com.google.gerrit.server.group.InternalGroup;
 import com.google.gerrit.server.validators.GroupCreationValidationListener;
 import com.google.gerrit.server.validators.ValidationException;
 import com.google.gwtorm.server.OrmDuplicateKeyException;
@@ -60,6 +61,7 @@
 import java.util.Collections;
 import java.util.HashSet;
 import java.util.List;
+import java.util.Optional;
 import java.util.Set;
 
 @RequiresCapability(ImportCapability.ID)
@@ -179,7 +181,7 @@
     return groupCache.get(new AccountGroup.NameKey(groupName));
   }
 
-  private AccountGroup getGroupByUUID(String uuid) {
+  private Optional<InternalGroup> getGroupByUUID(String uuid) {
     return groupCache.get(new AccountGroup.UUID(uuid));
   }
 
@@ -191,7 +193,7 @@
     args.groupDescription = groupInfo.description;
     args.visibleToAll = cfg.getBoolean("groups", "newGroupsVisibleToAll", false);
     if (!groupInfo.ownerId.equals(groupInfo.id)) {
-      args.ownerGroupId = getGroupByUUID(groupInfo.ownerId).getId();
+      args.ownerGroupId = getGroupByUUID(groupInfo.ownerId).get().getId();
     }
     Set<Account.Id> initialMembers = new HashSet<>();
     for (AccountInfo member : groupInfo.members) {
@@ -221,7 +223,7 @@
       throw new ResourceConflictException(info.name);
     }
     db.accountGroups().insert(Collections.singleton(group));
-    groupCache.evict(group);
+    groupCache.evict(group.getGroupUUID(), group.getId(), group.getNameKey());
 
     if (!info.id.equals(info.ownerId)) {
       if (getGroupByUUID(info.ownerId) == null) {
@@ -244,7 +246,7 @@
     addMembers(group.getId(), info.members);
     addGroups(input, group.getId(), info.name, info.includes);
 
-    groupCache.evict(group);
+    groupCache.evict(group.getGroupUUID(), group.getId(), group.getNameKey());
 
     return group;
   }
diff --git a/src/main/java/com/googlesource/gerrit/plugins/importer/InsertLinkToOriginalChangeStep.java b/src/main/java/com/googlesource/gerrit/plugins/importer/InsertLinkToOriginalChangeStep.java
index ba25273..eb3dbe9 100644
--- a/src/main/java/com/googlesource/gerrit/plugins/importer/InsertLinkToOriginalChangeStep.java
+++ b/src/main/java/com/googlesource/gerrit/plugins/importer/InsertLinkToOriginalChangeStep.java
@@ -28,8 +28,8 @@
 import com.google.gerrit.server.IdentifiedUser;
 import com.google.gerrit.server.config.CanonicalWebUrl;
 import com.google.gerrit.server.notedb.ChangeUpdate;
-import com.google.gerrit.server.project.ChangeControl;
 import com.google.gerrit.server.project.NoSuchChangeException;
+import com.google.gerrit.server.query.change.ChangeData;
 import com.google.gwtorm.server.OrmException;
 import com.google.inject.Inject;
 import com.google.inject.assistedinject.Assisted;
@@ -41,7 +41,7 @@
   private final CurrentUser currentUser;
   private final ChangeUpdate.Factory updateFactory;
   private final IdentifiedUser.GenericFactory genericUserFactory;
-  private final ChangeControl.GenericFactory changeControlFactory;
+  private final ChangeData.Factory changeDataFactory;
   private final ReviewDb db;
   private final ChangeMessagesUtil cmUtil;
   private final String canonicalWebUrl;
@@ -62,7 +62,7 @@
   InsertLinkToOriginalChangeStep(CurrentUser currentUser,
       ChangeUpdate.Factory updateFactory,
       IdentifiedUser.GenericFactory genericUserFactory,
-      ChangeControl.GenericFactory changeControlFactory,
+      ChangeData.Factory changeDataFactory,
       ReviewDb db,
       ChangeMessagesUtil cmUtil,
       @CanonicalWebUrl String canonicalWebUrl,
@@ -73,7 +73,7 @@
     this.currentUser = currentUser;
     this.updateFactory = updateFactory;
     this.genericUserFactory = genericUserFactory;
-    this.changeControlFactory = changeControlFactory;
+    this.changeDataFactory = changeDataFactory;
     this.db = db;
     this.cmUtil = cmUtil;
     this.canonicalWebUrl = canonicalWebUrl;
@@ -99,7 +99,8 @@
   private void insertMessage(Change change, String message)
       throws NoSuchChangeException, OrmException, IOException {
     Account.Id userId = ((IdentifiedUser) currentUser).getAccountId();
-    ChangeUpdate update = updateFactory.create(control(change, userId));
+    ChangeData cd = changeDataFactory.create(db, change);
+    ChangeUpdate update = updateFactory.create(cd.notes(), genericUserFactory.create(userId));
     ChangeMessage cmsg =
         new ChangeMessage(new ChangeMessage.Key(change.getId(),
             ChangeUtil.messageUuid()), userId, TimeUtil.nowTs(),
@@ -109,16 +110,6 @@
     update.commit();
   }
 
-  private ChangeControl control(Change change, Account.Id id)
-      throws NoSuchChangeException {
-    try {
-      return changeControlFactory.controlFor(db, change,
-          genericUserFactory.create(id));
-    } catch (OrmException e) {
-      throw new NoSuchChangeException(change.getId());
-    }
-  }
-
   private static String ensureSlash(String in) {
     if (in != null && !in.endsWith("/")) {
       return in + "/";
diff --git a/src/main/java/com/googlesource/gerrit/plugins/importer/OpenRepositoryStep.java b/src/main/java/com/googlesource/gerrit/plugins/importer/OpenRepositoryStep.java
index f37d9b2..06fb06c 100644
--- a/src/main/java/com/googlesource/gerrit/plugins/importer/OpenRepositoryStep.java
+++ b/src/main/java/com/googlesource/gerrit/plugins/importer/OpenRepositoryStep.java
@@ -89,7 +89,7 @@
       PermissionBackendException {
     CreateProjectArgs args = new CreateProjectArgs();
     args.setProjectName(name);
-    args.newParent = projectsCollection.get().parse(parent.get()).getControl();
+    args.newParent = projectsCollection.get().parse(parent.get()).getNameKey();
     for (ProjectCreationValidationListener l : projectCreationValidationListeners) {
       try {
         l.validateNewProject(args);
diff --git a/src/main/java/com/googlesource/gerrit/plugins/importer/ProjectsCollection.java b/src/main/java/com/googlesource/gerrit/plugins/importer/ProjectsCollection.java
index 74d3efb..ded7130 100644
--- a/src/main/java/com/googlesource/gerrit/plugins/importer/ProjectsCollection.java
+++ b/src/main/java/com/googlesource/gerrit/plugins/importer/ProjectsCollection.java
@@ -136,7 +136,6 @@
   }
 
   @Override
-  @SuppressWarnings("unchecked")
   public ImportProject create(ConfigResource parent, IdString id)
       throws RestApiException {
     return importProjectFactory.create(new Project.NameKey(id.get()));
diff --git a/src/main/java/com/googlesource/gerrit/plugins/importer/ReplayInlineCommentsStep.java b/src/main/java/com/googlesource/gerrit/plugins/importer/ReplayInlineCommentsStep.java
index 79d6370..5f12110 100644
--- a/src/main/java/com/googlesource/gerrit/plugins/importer/ReplayInlineCommentsStep.java
+++ b/src/main/java/com/googlesource/gerrit/plugins/importer/ReplayInlineCommentsStep.java
@@ -214,7 +214,7 @@
     }
 
     Iterables.addAll(del, drafts.values());
-    ChangeUpdate update = updateFactory.create(ctrl, TimeUtil.nowTs());
+    ChangeUpdate update = updateFactory.create(ctrl.getNotes(), ctrl.getUser(), TimeUtil.nowTs());
     update.setPatchSetId(ps.getId());
 
     commentsUtil.deleteComments(db, update, del);
diff --git a/src/main/java/com/googlesource/gerrit/plugins/importer/ReplayMessagesStep.java b/src/main/java/com/googlesource/gerrit/plugins/importer/ReplayMessagesStep.java
index dde14ee..9b1d130 100644
--- a/src/main/java/com/googlesource/gerrit/plugins/importer/ReplayMessagesStep.java
+++ b/src/main/java/com/googlesource/gerrit/plugins/importer/ReplayMessagesStep.java
@@ -92,7 +92,8 @@
           : null;
       if (msg.author != null) {
         Account.Id userId = accountUtil.resolveUser(api, msg.author);
-        ChangeUpdate update = updateFactory.create(control(change, userId), ts);
+        ChangeControl ctrl = control(change, userId);
+        ChangeUpdate update = updateFactory.create(ctrl.getNotes(), ctrl.getUser(), ts);
         ChangeMessage cmsg = new ChangeMessage(msgKey, userId, ts, psId);
         cmsg.setMessage(msg.message);
         cmUtil.addChangeMessage(db, update, cmsg);
diff --git a/src/main/java/com/googlesource/gerrit/plugins/importer/ReplayRevisionsStep.java b/src/main/java/com/googlesource/gerrit/plugins/importer/ReplayRevisionsStep.java
index 4eafe91..7272cd5 100644
--- a/src/main/java/com/googlesource/gerrit/plugins/importer/ReplayRevisionsStep.java
+++ b/src/main/java/com/googlesource/gerrit/plugins/importer/ReplayRevisionsStep.java
@@ -188,6 +188,8 @@
       case REJECTED:
       case REJECTED_CURRENT_BRANCH:
       case RENAMED:
+      case REJECTED_MISSING_OBJECT:
+      case REJECTED_OTHER_REASON:
       default:
         throw new IOException(String.format(
             "Failed to create ref %s, RefUpdate.Result = %s", ref, result));