filename issues with tmx import and export from and to NEC-TM

When I upload a TMX file to NEC-TM, translate5 somehow adds the string "LanguageResources" to the beginning of the file name and some random letters to the end.

Please see attached screen.

Also on the export we get back a zip file, but it is named ".tmx". That we get back a zip file is ok - NEC-TM does it this way, but it must be named ".zip".