GCE Firstly, apologies for the delay in responding here!
As I understand you have installed PowerShell ASM module and perform the commit operation with classic admin rights?
Step-by-Step: Migrate your classic Cloud Services to ARM–Storage Migration
Migrate a storage account
Based on the error message : unable to delete storage account until a previously-initiated migration (a process of transferring data from one location or system to another) is either completed or cancelled. This is likely a restriction put in place to ensure consistency and prevent data loss or corruption during the migration process.
Since you have already tried the few troubleshooting steps for deleting the storage account , I would recommend to contact Azure Support this requires 1*1 investigation on the issue. If you have a support plan, I request you file a support ticket, else please do let us know, we will try and help you. The support team will work closely with you and provide speedy resolution.
Please let us know if you have any further queries. I’m happy to assist you further.
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