If the disconnect is a solenoid that is operated remotely... Is it possible you blew it's fuse somehow. In this case, I can believe conicidence, sometimes fuses wear out. It is a 5 amp fuse in the BCC on some coaches.
Another issue I HAVE PERSONALLY HAD. is a dirty remote switch, The 3-position use/ /store swich just inside my door, WHen I was in Utah a few years (six) ago I hit STORE and fueled up at the propane pump. Moved off and hit USE. and NOTHING, I mean NOTING.
Finally did the step 1 cleaning and it worked.
To do step one cleaning (the easy way) pull the aforementioned fuse, Now operate the self-cleaning switch say 50-100 times in both directions, Replace fuse and see what happens.. I got lucky. It worked and still does.
Home is where I park it!