In the source keypassx github, there is a pull request for adding some of the basic keepass references into autotype. Is it possible to get that PR merged into this fork?
keepassx/keepassx#184

Expected Behavior

On Amazon.ca, I should be able to autotype/fill from ChromeIPass the records from amazon.com, as the u/p combo is stored as {REF:U@I:AMAZON.COM_UUID} and {REF:P@I:AMAZON.COM_UUID}

Current Behavior

It sends the strings (ie: {REF:U@I:AMAZON.COM_UUID}) instead of the u/p specified in the amazon.com reference

Possible Solution

Copy the pull request from the keepassx github and merge it in

Context

Amazon.com and Amazon.ca both use the same credentials, but as they are using different URLs, they are seen as different sites to Keepass/KeepassX and ChromeIPass. Keepass on Windows manages this by allowing you to create 2+ separate entries, one containing the real values, the other containing a reference via UUID to the first one (http://keepass.info/help/base/fieldrefs.html).