Hey there,

JCH Optimizations are often very unpredictable simply because the way they are collecting and compressing javascripts. Unfortunately this is not something that we can fix because it depends on the scripts that are available on the site and how are the ordering of the scripts when JCH Optimize compresses it.

By the way, do take note that with JCH Optimize enabled, your initial page load will increase by default because it needs to stat compressed script files . I always believe the initial page load is much more important than anything else.

As for the URL, unfortunately right now there is no way to fix this. The only way to really address this is for you to add a 301 redirect within your .htaccess file. We did actually thought of creating a "history" table to detect changes in category and process them accordingly when generating URLs but the cons of it is that it adds additional load to the site which is not something very favorable.

I would prefer to create a 301 redirect on the .htaccess file rather than adding additional sql queries and load to the site.