Okay I cannot use console for success.
I have found some Multi-Sig addresses, that are from Single-Sig addresses that are not in wallets.
The Single-Sig addresses do not appear in either one of two wallets making up the Multi-Sig wallet.

I view all private keys, and some addresses are missing.

I try in console
getprivatekeys ('address')

and this does result in errors.

Somehow the wallet must find these addresses internally?