It seems that upon an fresh import, GSE replaces Sinister Strike with Roll the Bones, not all instances of SS but in this case just one. This issue has been seen by other people using this macro but it seems to not break the macro since Roll the Bones is never actually done (very strange)

Macro location:
https://wowlazymacros.com/forums/topic/bfa-outlaw-questing-pvp/
its v.4

here is a sample:
/castsequence [reset=combat] Sinister Strike, Roll the Bones, Blade Flurry, Sinister Strike, Sinister Strike, Sinister Strike, Pistol Shot, Roll the Bones

The OP never put in "Roll the Bones" in the macro, also, he has the "Slice and Dice" talent, which does not use Roll the Bones.

Ok, so in my case, I always had Slice and Dice but when the macro was imported, it showed Roll the Bones. So, are you saying that even though it says Roll the Bones, its actually casting Slice and Dice (I'm talented with Slice and Dice)?

At this point I don't know what the OP of the macro had in there, he swears up and down that he NEVER had Roll the Bones in there, so I just don't know how its showing up in the macro.
So, right now I have Slice and Dice talented and if I import the macro, it will show Roll the Bones (don't know if the OP has that in the export or what, trying to work with him to figure out whats going on)

So I just deleted the macro, did another import (talented with Slice and Dice) and the macro shows Roll the Bones, now, during execution, I never see Roll the Bones, so its not using that spell. And Slice and Dice is being used.

Ok, thank you for the explination, I will post this in that macros thread.