[Fixed] last exported format

Export do not save last exported format. So If I last Save or Save As in .vws Export will always use this format, so I have everytime set to .obj manually.
In opposite Save As works good, so if I last save in .vws next time if I wat to save it will use .vws.
Also what is difference between Save and Export? now I try to use Save to save .vws and export for .obj, but with this bug it is hard 

I think it is fixed. Please check.

Working!