Will I lose my app's settings if I move it back?
Short answer: No. A moved app's settings and data never left your Mac, so moving the app back leaves them exactly as they were.
No. Move only ever relocated the app itself — its settings and data stayed on your Mac the whole time — so moving it back changes nothing about them. The app opens just as you left it.
(For an offloaded app, Restore brings the app and its data back together.)