"J" or "K" ? Some files have comment columns.
At start of scenario it might work 100% of the time.
For events, this works in 99% of the cases, but not 100%. I recently put together a special event file tacked onto the end of the "Various Events.sct" for AACW v1.11 (public beta). This event was for saved games that ported over Ft De Soto information into the new Ft Delaware. It works by checking for CSA ownership of the New Ft Delaware, if found, it removes the CSA units and replaces them with the new USA Fort units, which were supposed to be inside the fort. Instead they show up outside the fort. (entrenched to Level 4 correctly, but still outside the fort).