vardefs.php versus vardefs.ext.php

[helpwithasmile]

What is the fundamental difference between the .php files found in custom, and the .ext.php files?

It seems like the .ext.php files are generated by Sugar, but even after I change the vardefs.php file, the corresponding .ext.php file seems to revert to an old version of a custom vardefs which is no longer valid- I have cleared all of the caches, so I am not sure why these old lines of code keep coming back.

Is there somebody who could clarify?

[cjohnston]

the vardefs.ext.php file under the custom directory is where you want to make changes in order to not impact the core logic which could be overwritten when you update SugarCRM. If it is a core module which you are creating a varfeds file for, then you need to place a file system lock on the the vardefs.ext.php file or else the system will delete it.

http://www.sugarcrm.com/forums/showthread.php?t=29238

http://www.sugarcrm.com/wiki/index.php?title=Vardefs

I hope this helps