No "Save As" feature on Acrobat Reader for Android

It has been my common practice until now to load my latest PDF form, make some slight changes and save the new version as a different file name in the same folder. This worked very well on Acrobat Reader on the BlackBerry I had been using for work. Now the company has switched to the Samsung Galaxy and this no longer seems possible, as there is no longer an option to "Save As" that I can find. Is there any other way of saving the new altered file in the same location as the original after these changes are made without overwriting the existing file?