Primary computer keeps active mouse when I move to secondary

Hello! this is my first post sorry if i am doing this in the wrong spot.

I am setting up multiplicity as i do every year for the everquest TLP servers. I have always used multiplicity to box and its usually really easy but this time i am finding that if i use my mouse to move by holding right click and left click on a secondary computer the primary computer picks up the command and copies it as well.

I think my primary multiplicity has kvm as well. could someone help me disable this feature or tell me what i am doing wrong?