Reduction in Application size post cloning

Summary:

Hi All,

Is it expected to see reduction in application size post cloning it from Prod to lower environment?

We have an application which shows size of data in database as approx 45GB in Prod, however, post cloning the application from Prod to Test, the same value in Activity report shows as only 30GB. Is there any way to know what could be missing here?

We selected all the checkboxes during cloning and didnt exclude anything.

Content (please ensure you mask any confidential information):

Version (include the version you are using, if applicable):

Code Snippet (add any code snippets that support your topic, if applicable):