Christy-
I am not sure how Language Forge handles sort order. Usually the sort order and list of word-forming characters would be listed in a file with the extension .ldml. When you do a LIFT export from FLEx, it should be creating an entire folder, not just a single file. I have not done an import into Language Forge yet, but does it ask you for the whole LIFT folder, or just the .lift file? If it asks for the whole folder, hopefully it is bringing in the .ldml file and getting the sort order and information about which characters are word-forming.