I just tried a basic example of this and it worked for me, so could you please tell me more about your report so that I can more closely align my example with yours, for example is the filter that you'd like to link with in both the master and append queries, or is it just in one of them? Are they linked between the master and append queries? Is it a regular append query or an advanced append query? And if you can think of anything else about your reports that might be pertinent to the issue then please by all means let us know. Also, you might prefer to just take some screenshots of the various screens within the report builder to show us how it is configured.