Been conversing with myself as I work through this. :-) More issues: http://jira.jboss.com/jira/browse/JBCACHE-1298 My proposed fix to JBCACHE-1298 is as follows: 1) CacheImpl.invalidate() should not create a tombstone if argument DataVersion versionToInvalidate is null. Just return. The cache is already in a state consistent with the intent of the invalidate() call; there's no need to do anything further. 2) If a tombstone does need to be created, the versionToInvalidate should be set as an Option when it is created, rather than putting in a possibly incompatible DefaultDataVersion. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=4132635#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...