Hmmm - I'm confused. You seem to have the same level [YM] in your hierarchy twice - at the top and at the bottom. This doesn't make sense - you can't have the same named level in two different places in the same hierarchy. Could you double-check this? Also, do you definitely have a second level called [Month Time]?
If I ignore the first two levels you included, it seems to make more sense:
FSCL_Y your Fiscal Year level?
TRM_CTGRY your Term Cagegory level?
QTR_TRM_CTGRY your Quarter Term Category level?
YM your Month level?
Is this your hierarchy structure, or are there really two more levels?
Thanks,
MF.