BW> Would it safe to let some other software operate on the JAM bases (e.g.
 BW> GoldEd), or would that "destroy" something for Mystic?

Mystic does store additional information about a message base outside of JAM and I would assume anything else that uses JAM would too.  The data files alone only store the message data.

Either way you can use GoldEd with Mystic. MUTIL can even export a GoldEd configuration for your message areas!

... Multitasking: Reading in the bathroom

--- Mystic BBS v1.12 A47 2021/07/31 (Windows/64)