diff --git a/gradle/libs.versions.toml b/gradle/libs.versions.toml
index 8e25e2cd..0b53f11d 100644
--- a/gradle/libs.versions.toml
+++ b/gradle/libs.versions.toml
@@ -5,7 +5,7 @@ modelix-model-api-gen = { id = "org.modelix.model-api-gen", version.ref = "model
 npm-publish = { id = "dev.petuska.npm.publish", version = "3.4.2" }
 
 [versions]
-modelixCore = "5.0.0"
+modelixCore = "7.0.0"
 
 [libraries]
 modelix-model-api = { group = "org.modelix", name = "model-api", version.ref = "modelixCore" }
diff --git a/mps-legacy-sync-plugin/src/main/java/org/modelix/model/mpsplugin/ModelCloudExporter.kt b/mps-legacy-sync-plugin/src/main/java/org/modelix/model/mpsplugin/ModelCloudExporter.kt
index 0c71da16..61978db5 100644
--- a/mps-legacy-sync-plugin/src/main/java/org/modelix/model/mpsplugin/ModelCloudExporter.kt
+++ b/mps-legacy-sync-plugin/src/main/java/org/modelix/model/mpsplugin/ModelCloudExporter.kt
@@ -67,7 +67,6 @@ import org.modelix.model.lazy.CLVersion
 import org.modelix.model.lazy.CLVersion.Companion.loadFromHash
 import org.modelix.model.lazy.PrefetchCache.Companion.with
 import org.modelix.model.lazy.RepositoryId
-import org.modelix.model.metameta.MetaModelBranch
 import org.modelix.model.mpsadapters.mps.SConceptAdapter
 import org.modelix.model.mpsplugin.ModelCloudExporter.PersistenceFacility
 import java.io.File
@@ -181,7 +180,7 @@ class ModelCloudExporter {
         }
         return repositoryInModelServer!!.computeRead<List<Solution>>({
             val tree: CLTree = version.getTree()
-            val branch: IBranch = MetaModelBranch(PBranch(tree, IdGeneratorDummy()))
+            val branch: IBranch = PBranch(tree, IdGeneratorDummy())
             PArea(branch).executeRead({
                 with<List<Solution>>(tree, {
                     val t: ITransaction = branch.transaction