Mario: "The BLUGRG8 Bluegrass Reso Solo 8ths was set at measure 46 but comes in on measure 91 ends at measure 127 with no style change at that measure!"

Mario, Reso Solo was programmed to happen at bar 46 but comes at bar 91 (2 x 46 = 92). In the same way it ends at bar 127 because a change was programmed at bar 64 (2 x 64 = 128) and so on...
You may also look at bar 8 and 16, 46 and 92.
I don't know the reason therefore. Because the styles are Half Time ?

I made different versions of this backing track and I don't remember which one we are here referring to. So maybe the styles changes are not the ones here above mentionned.