Bulk replace saved password hash in 12.12

I may not be asking this in the right place or with the right words, but:

Using Toad for Oracle 12.12 on a 12c database – I have several dozen connections, each connection using the identical password. It used to be, one could edit the connections.xml and replace the stored hashed passwords in buik. I can generate the hash value for the new password.

Help is requested with the syntax. The connections.xml for example shows the hashed string ending with an equal sign. That’s different than what I’m pulling from the instance. TIA.