Ren'Py Anyone know how to use the "old-game" directory properly?

[boundsoul]

I understand how .rpyc files work and how they're used, but the following documentation and Patreon articles mention using the "old-game/" directory to maintain save compatibility between releases:

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I can generate the "old-game/" directory from the launcher just fine, but how do I actually use it?

Does the launcher build .rpyc files using the "old-game/" directory automatically?

Is is just a backup of the .rpyc files used to make the last build, and I'm supposed to copy/paste them in my "game/" directory when I make the next release so they're used as a base for the next .rpyc files?

 

[anne O'nymous]

Does the launcher build .rpyc files using the "old-game/" directory automatically?

I haven't checked, but it's what I get from the documentation.