Often foreign nationals are admitted in one category and apply for a change of status (COS) to another category while in the U.S. Recently, USCIS issued a memorandum reminding applicants applying for COS that if they traveled abroad while the application was pending, their application would be considered abandoned and USCIS would issue a denial. Traveling abroad will also result in a denial of any Form I-765, Application for Employment Authorization, filed before the COS is approved. Therefore, if you are planning to travel abroad you must strategize the filling of any application for COS.
Traveling abroad while a Change of Status is Pending is Fatal
Marks Gray P.A.