Hi, sorry, you've not read the issue correctly.

You can not move an entry from one account to another once it has been matched to a bank transaction, this was the error I received. It said I must unmatch it first before being able to re-assign which payment account was used for the transaction.

So, in order to move all my previously matched entires out of the old quickbooks account, and unlink the bank account from that QB account, then move the entries over into the new QB account and then link the bank account to that one, it required unmatching them all. I did this and the manually entered entries remained and all the entries that were added using the "Add" function on the Banking page were deleted. Please see audit log below attached.

Importing them back is not an issue, its re-naming them each correctly and then finding copies of the paper invoices and receipts to re-upload. Good thing I didn't 100% rely on it in the first place and kept the paper copies!