So, I cant reply to an old thread, but maybe I can link to it:
This USED to work. What the OP is asking - select a group of transaction, do the "Edit Transactions" from the pop up window. Change the Category to Transfer, select an account and then OK.
For years I have moved 12 or more transactions at a time and had Quicken ask me for each one OK to match to an existing transaction in the destination account. Nice to double check and way easier than manually finding and dragging and dropping each one.
In an update in the last 6 months, that broke (sorry I dont get around to quicken except at tax time!) If I had to guess, it broke sometime in Jan 2023.