Windows 10: Why don't some of my windows stay on the monitor I last used them on?

I use two monitors (the laptop monitor + a VGA monitor). I connected a 3rd monitor (HDMI) for a while, then disconnected it as I didn't really use it. Since I disconnected it, one of the programs I use always opens on the laptop (main) rather than #2 screen where it is when I shut down. All the other programs I have tried seem to remember where they were when shut down - whether it is monitor 1 or 2, and size etc.

Even the subsidiary windows of the program in question open in their correct locations, it is just the main part of the program that insists on coming up on the main monitor.

Some detail - Win 10, program in question is to do digital communications for amateur radio - called fldigi. I tried reconnecting the 3rd monitor, but the problem is still there, so disconnecting/reconnecting may have just been a coincidence.

Any ideas of how to make the program open on #2 monitor in the location it was when last used? It used to be OK up till I changed the monitor arrangements recently.

Thanks
JJ

:)

 

programs not showing up on screens, possibly on another monitor, but when i check its on all monitors, but still no program!

So what I have is, I used to use just one monitor, and never had another, but then I got a new monitor and I had it to the left of my original monitor and then I decided to put it onto the right side, because it fit my desk better, but now all the programs
want to open on the left side, but there is no monitor there, and they open, but I cannot move them, and they stay there, to get to them and move them I have to go into settings and change the monitor settings and all, so I can drag it from left to middle,
and if I want it on the right, then I have to change the setting again and drag to the right.

I am using windows 10, and I love my two monitors, I don't want to keep changing it though, so if someone could give me a answer that is actually helpful and that will be able to help me for ever with this problem, that would greatly be appreciated.

 

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