Transferring History to New Account

I had to re-establish my Direct Connection to my local bank and although this worked I had to create a new account and was only able to bring over the last 90 days. Within the same Quicken file I still have the "old" account, which no longer downloads info but contains years of transactions. How do I add this old history into the new account? I am trying to avoid doing it one line item at a time (I have transactions going back for 15+ years!) Thanks.

Note: I tried multiple times to re-establish Direct Connect on the original account, but these attempts were all unsuccessful. :/