From your explanations re Beat 1 and Beat 2 : These are Patterns, so you don’t load a Pattern whilst you’re in Beat 1, because Beat 1 is a Pattern. Ditto for Beat 2.
It sounds like what you really want to do is copy a pattern.
What are you trying to achieve ? Do you want Beat 1 and Beat 2 to have the same sequence pattern, but each associated with different kits (sounds, etc) ?
If ‘yes’ then Copy Pattern is the way to go.