Trouble with assigning apps to Display 1 while using dual monitors. Specifically LR5

I have dual monitors. I have a 3x2 grid on each monitor, giving me 12 displays. No matter what display I assign LR5 to, it always shows up on what ever display I am currently using. Have tried closing, opening, unassigning, reassigning…Nothing seems to work. Please, does anyone have any ideas. So far every other app I have assigned to a specific screen has stayed where I assigned it regardless of which monitor the display is on.

Thx for your consideration on this in advance.

If you control-click on the Dock, and use Apple’s Options menu for assigning Light Room to a particular space, does that help? (Rather than use the TotalSpaces2 Apps prefs)