The Config changes report can be filtered on several elements (nearly all).

But i don't understand why it's not possible to filter on Plugin.

In my opinion, it would be really usefull, allowing a simple way to find all changes made to a specific plugin.

In recent versions, using the new report builder, it seems easy to add this, just by modifying 2 files : 

• report/configlog/classes/reportbuilder/local/systemreports/config_changes.php
• report/configlog/classes/reportbuilder/local/entities/config_change.php

It would be usefull.

I've opened a discussion about it (in french), where a code solution has been provided.