Battlescript variables...

Hmm, var 36 is stored at 7E/3DAC. When the map gets re-loaded after a battle, all of the RAM from 7E/2000-7E/5FFF gets reset so that it can be used by the map program. The code for this is at C0/566A. That's the reason why they copy the global battle variables from $3EB4 to $1DC9 at the end of every battle. The map program uses a ton of memory, so pretty much everything gets reset when the map loads.