Trados Studio as an internal format uses it’s own flavor of XLIFF, namely SDLXLIFF. Since these files generally adhere to quite loosely defined XLIFF standard, it is easy to open them in other tools supporting XLIFF (particularly in memoQ), translate them and insert translated file back into Studio project. Unfortunately all data on matching and segment statuses are coded in Trados-specific way, so we’ll lose this information when switching tools. Fortunately, there’s a way to keep at least segment states.