Sounds as if one has to sell a house and then shortly, take possession and move into newly bought home, it gets complicated. I haven't been in that position yet.

I dealt directly with bank's mortgage dept. I've never dealt with third party mortgage companies. Things may be slightly different in Canada. The terrible US economic crash that we in Canada, read about bad mortgages or whatever the companies structured them, seemed like a lot looser at time of crash, in terms of regulatory controls.

All more the reason, not to accumulate too many assets ..to pack, move etc.