If switching from another backlog system to Azure DevOps, is it possible (in some admin settings) to set the start number/offset for auto-numbering of ids?
Say for instance, that we have item id's in our old backlog up to 4000 and want to continue this numbering.
After a work item is created, you can modify all fields except for the ID. When you add and save a work item, the ID is assigned by the system and cannot be changed.
Sorry this is not able to do this. You could not use work item auto-id numbering to begin from custom offset, it's controlled by system.
You could create another customized field to set your customized IDs or follow jessehouwing's suggestion above.
No not really. You could use the API to create (and destroy) 4000 work items... That would do the trick.