EPiServer 7 Convert Pages doesn't limit to selected page

I started to worry this conversion when I notice that conversion log announced removing 14 properties although I had selected only I page to convert. Just to test page conversion I marked to remove MainBody property So when I converted ONLY "convert test page" it also removed the MainBody property from all the other same type of pages. So basically DON'T USE PAGE CONVERT TOOL with EPiServer 7 (with patch 1) until this bug is fixed.  
I started to worry this conversion when I notice that conversion log announced removing 14 propertie…