Remove statements that C8 does not support instance migration

docs/components/best-practices/operations/versioning-process-definitions.md

@@ -33,8 +33,9 @@ Run versions _in parallel_ for
 
 ### Migrating process instances to a new version
 
-:::caution Camunda 7 only
-Camunda 8 does not yet support process instance migrations as described here. This feature is currently in development and will be available soon.
+:::caution Camunda 8
+This description is Camunda 7 specific, but with Camunda 8 you can migrate process instances in a similar fashion.
+Read more about the concept in Camunda 8 [here](../../concepts/process-instance-migration.md).
 :::
 
 _Migrate_ running instances to the newest definition when:
@@ -45,7 +46,7 @@ _Migrate_ running instances to the newest definition when:
 Migrating process instances can be achieved either programmatically or by using the operations tooling. _Programmatically_, you need to _create a migration plan_ that describes how process instances are to be migrated from one process definition to another.
 
 ```java
-// Sample code from Camunda 7.x, this feature is not yet available in Camunda 8:
+// Sample code from Camunda 7.x:
 MigrationPlan migrationPlan = processEngine.getRuntimeService()
   .createMigrationPlan("exampleProcess:1", "exampleProcess:2")
     .mapActivities("assessCreditWorthiness", "assessCreditWorthiness")

versioned_docs/version-8.4/components/best-practices/operations/versioning-process-definitions.md

@@ -33,8 +33,9 @@ Run versions _in parallel_ for
 
 ### Migrating process instances to a new version
 
-:::caution Camunda 7 only
-Camunda 8 does not yet support process instance migrations as described here. This feature is currently in development and will be available soon.
+:::caution Camunda 8
+This description is Camunda 7 specific, but with Camunda 8 you can migrate process instances in a similar fashion.
+Read more about the concept in Camunda 8 [here](../../concepts/process-instance-migration.md).
 :::
 
 _Migrate_ running instances to the newest definition when:
@@ -45,7 +46,7 @@ _Migrate_ running instances to the newest definition when:
 Migrating process instances can be achieved either programmatically or by using the operations tooling. _Programmatically_, you need to _create a migration plan_ that describes how process instances are to be migrated from one process definition to another.
 
 ```java
-// Sample code from Camunda 7.x, this feature is not yet available in Camunda 8:
+// Sample code from Camunda 7.x:
 MigrationPlan migrationPlan = processEngine.getRuntimeService()
   .createMigrationPlan("exampleProcess:1", "exampleProcess:2")
     .mapActivities("assessCreditWorthiness", "assessCreditWorthiness")

versioned_docs/version-8.5/components/best-practices/operations/versioning-process-definitions.md

@@ -33,8 +33,9 @@ Run versions _in parallel_ for
 
 ### Migrating process instances to a new version
 
-:::caution Camunda 7 only
-Camunda 8 does not yet support process instance migrations as described here. This feature is currently in development and will be available soon.
+:::caution Camunda 8
+This description is Camunda 7 specific, but with Camunda 8 you can migrate process instances in a similar fashion.
+Read more about the concept in Camunda 8 [here](../../concepts/process-instance-migration.md).
 :::
 
 _Migrate_ running instances to the newest definition when:
@@ -45,7 +46,7 @@ _Migrate_ running instances to the newest definition when:
 Migrating process instances can be achieved either programmatically or by using the operations tooling. _Programmatically_, you need to _create a migration plan_ that describes how process instances are to be migrated from one process definition to another.
 
 ```java
-// Sample code from Camunda 7.x, this feature is not yet available in Camunda 8:
+// Sample code from Camunda 7.x:
 MigrationPlan migrationPlan = processEngine.getRuntimeService()
   .createMigrationPlan("exampleProcess:1", "exampleProcess:2")
     .mapActivities("assessCreditWorthiness", "assessCreditWorthiness")