Rename the measurement back OR add “@Across_Shoulder_Half” in SeamlyMe. The easy way to add missing measurements is to load the measurement file into SeamlyMe, then Import the missing measurements from the pattern:
Don’t rename measurements once you have used them in a formula - without renaming the measurements in every formula that uses it.
Here’s the files back with the groups issue also fixed. You have to add a real value for the imported measurents as I just guessed at a value so the pattern wpuld work.