I want to bring over my QATs created in Office 2007 (running in Windows XP Pro) into Office 2010 (running in Windows 7 Pro). Because there is no way to export the Office 2007 QATs to a file, I can't do the normal importing a customization file directly from within Office 2010. However, if I copy my word.qat (or excel.qat, powerpoint.qat, etc) file created in Office 2007 over to the appropriate folder in Office 2010, and just change the file extension from ".qat" to ".officeUI" it brings up my QAT settings in Office 2007. It looks okay and seems to function properly like this.
I think this will work, but I'm not sure if it will cause other problems. It seems to look okay. Will I run into trouble with it later?