IMPORTANT: The port of this fix to Meridian 2015 is still pending ...

https://github.com/OpenNMS/opennms/pull/988

I found why the filter doesn't work. In fact, I seriously doubt if this was working before. Any filter kind for outages, requires a filter implementation like any other class you see on the following link, and that is not the case for "building" or any other asset:

https://github.com/OpenNMS/opennms/tree/develop/opennms-webapp/src/main/java/org/opennms/web/outage/filter

The good news is, creating a new implementation to filter on any asset field won't be hard to do. I'm testing a potential solution at this moment.

I agree with you, but this is a feature that one of our customers is currently using, which is the reason why this and exist. Now, if you have an alternative to them, please let me know.

I really think we need to remove the concept of site being tied to building. Actually, in the site status view, I don't think it is specifically tied to building but would allow you to choose any asset field; but I digress. I think that we need to abandon this all together and equate sites with monitoring locations. This makes the concept much simpler and the filtering probably much much easier.