Hi Brandon,
Hope you're doing well.
I'm sorry to hear that you're experiencing issues with the Hyper-V disk storage move. Based on your description, it seems like the move has been completed successfully, and the VM is operational. However, the "perform move" prompt is still stuck, and you want to get rid of it without breaking anything.
You can confirm whether the data in the current virtual machine is lost. If not, I recommended that you back up the virtual machine first to prevent errors in the subsequent process.
One possible solution is to try to cancel the move operation.
If the above steps do not work, you can try to restart the Hyper-V Virtual Machine Management service.
I hope this helps! Please let me know if you have any other questions or concerns.
Best Regards