How do I extract a widget from a device?

I have an F6X Pro Solar which is about to be RMA'd. I'm transferring data to the new device, but I can't find the widget I use most (and it has disappeared from the store).

I am familiar with side-loading and use it to move watch faces which aren't technically compatible with the F6X.

I can't find this widget, however. I found the name of the .PRG in GarminDevice.xml, and grepped the string in a few data files. But I can't find the actual .PRG, and the data files are too small.

There is clearly some nuance here I'm not getting- help? Where can I find this file?

Fenix 6X Pro Solar, 15.71, all CIQ etc at most recent beta versions.