I rely heavily on iStrelok (I use iStrelok Pro) for calculating drop on my multi-distance range and especially hunting. I haven't been shooting my airguns for a couple years but getting back into it and using the app again. Today I selected one of my common rifle/pellet combos and the ballistic settings for the pellet are mixed up with settings from another cartridge. Does anybody know how this occurs or anything I can do to prevent it?