The TJ's transfer case doesn't call for Dextron II. The Manual specified ATF+3 for older tcases and ATF+4 for newer TJs, depending on the auto transmission used that Year. Either is fine.
But the bottom line is the Wrangler's transfer case doesn't actually care which ATF it runs on, any good quality ATF is fine. Only an automatic transmission is fussy about the type of ATF it runs on.