@TheSC2Maniac: Go I toally forgot that possibility. I suffer from it sometimes, when I forget there's already a map set in the 'Test Map' field.
@TheSC2Maniac: Go So it isn't duplicated. I suggest checking the damage effect, something might be wrong. Multiplying the damage using one of the damage factor fields could in theory cause it.
Sounds like the upgrade effects are duplicated. Try switching to XML mode and check the list.