RE: Set resolution date for imported data
Hi,
There are ways excel/workflow etc to do bulk close/ update of records but I am not sure if you can set a specific close date. If that's okay, you can create an on demand workflow which trigger on case entity and then sets the status to closed. You can then run this workflow on multiple records manually or by using Bulk Workflow Execution tool within Xrm Toolbox.
You can also export the cases and then sets the status to close and then import them again in the system, This will also close the record. But again the close date would be as on today. This is because the cose case details are stored in an activity called CloseIncident which is a separate record gets created when you close the case.
If you want to specific close date then you can write some custom code to retrieve the required records and then set the case to close with specific date.
Hope this helps.