The filesRevision attribute should be incremented whenever the javascript content changes, as per the following quote from an Aras hotfix installation instruction. This seems like a natural addition whenever something inside Innovator/Client is edited by ArasSync.
From the root of your code tree, navigate to \Innovator\Client\ and edit the web.config file
Near the bottom of this file, find the tag called <cachingModule/>
Edit the filesRevision attribute of this tag. The value should be increased from std to 2, 3, 4, etc
<cachingModule moduleEnabled="true" filesRevision="2"/>