I am using Autocad 2009 with Cadworx 2012 64 bit version. I am trying export a file to Caesar 5.3 version. When I click on the .CAESAR II to import to Caesar it turns the ".c 2" file into 2 files one called "control" the second has a ._A extension. I have no problem exporting from Cadworx 2010 with Autocas 2009. Any Ideas what the problem is?