Hi Xeva and welcome to the forums!

if you set F1, for example, as the PiP hotkey for your main region.... no matter which character you have swapped in... hitting F1 will always bring the original character back to the region. this would be due to "Better Operational Organization Based on Selection" (BOOBS), implemented in v1.8e.

please make sure you are using the latest version.

remember, you get all updates for free... i just ask that people help spread the good word.

good luck and have a great weekend,

-- Rob