That is a different issue than swapping one cars numbers to another but....
Yes, technically moving a VIN from a dash pad, placing it on a new dash pad and installing the same VIN back in the car it came from is illegal.
Would a cop be likely to prosecute you for it? Not likely, but he could.
If you send your dash pad to Just Dashes with the VIN tag in place they will destroy it.
Most state laws have no provision for removing the dash VIN for restoration purposes. Of the state laws I have read, Georgia has a provision for it.
If you do not like your state laws on the issue, it is up to you to contact your states legislators and ask them to change the laws.
Barry