MacMail in Big Sur

I recently bought a new MacBook Pro 13" with Big Sur. I transferred all my data from my MacBook Pro 2012 Catalina. In MacMail, I have 2 email accounts (1 POP and 1 IMAP). Over the past 2 decades, on all my Macs, Mac mail grouped all my accounts together, giving me a drop down if I needed to see separate inboxes, Junk, Trash, etc. Everything deleted from both accounts went to 1 Trash folder or 1 Junk folder. The new MacMail merges the accounts on top, but produced two trash folders below the On My Mac header. If you scroll down, it separates the two email accounts and gives each one new Inbox, Trash, etc. folders. Now I have 4 trash folders I have to dump for 2 email accounts. I cannot find any preference to merge all the trash into 1 Trash folder. This is really annoying. (Please see attached screen shot.)

Thanx!