Is there a way to find all config changes between clients and sap system

We have our Dev system with clients

310 - Developer make changes and create transport

400 - Test client

410 - a copy of our Production system (over 1 year ago0

TST - this is our quality system with one client

101

Production system one client

101

I know if i do a database copy from Production to our TST system, both systems would be exact.

Abaper Director wants to know all the configuration changes that are different between Devopment client 310 - Test and production.

I told him that in development client 310 the abaper or functional users make most of the changes if they do not get transported they would be missing.

I cannot copy to client 310 otherwise we would loose all of our version management.

Is there another way that I can see the config changes between all these clients.

Thanks

Joe