Retrieve a previous version of an application
We are on Apex version 4.
We recently had a situation where we needed to to retrieve an older version of a screen within an Apex application.
It had been a while since I had done an Apex export of this application and so we had no current backup of the source code.
As a result of this we are going to implement regular Apex exports of all applications.
My question is this, would it have been possible to have imported all relevant Apex schemas from a datapump backup into another database and therefore retreive the missing source code?
If this is the case what schemas should I have imported to achieve this?
Thank you in advance.