mail filters

[mick.crane]

I'm using what ever is in Debian Bookworm, I'm pretty sure.
These filters?
I collect from different email addresses like gmail and that.
If filter for the "Sent to" email address, move to this directory
If "From" contains "blah", move to this other directory.
If something is Sent to and also From contains "blah" then I get 2 
copies of the message in both filter directories.
How can I fix this?
regards

mick