EXS 24 Logic Sampler Users Group

I'd like any edits I make on the EXS24 to be song-independent and so I
followed the manual's instructions on setting up a sub-folder named "Sampler
Instruments" inside the song folder and copying the related sampler
instrument files into this folder.

Just like it says, a new hierarchical menu item appears within the EXS24's
sampler instrument flip menu containing the song's name and any instrument
entries copied to this folder earlier.

However, any edits I make don't have any effect at all on the patches from
this new menu. I don't understand why.

If I select the same intrument and patch from the original (master)
selection patch menu, the edits
work BUT, I don't want to write to the MASTER file,
I want the edits to be song-independent.

Anyone using the EXS24 know how to make this work right?

Thanks.