Delphi Product Code History Limit

How to change the limit of Delphi Code History

To get more changes in your History while you're editing your Delphi project.
Go to [Tools]
Then [Options]
On the [Left] panel, choose [Editor].
In the [Right] panel, for [File backup limit].
Change to a number you're most comfortable with.
I have mine set at 30.

If you have multiple instances open, you will need to close out of all instances.
Then reopen them for the changes to take effect across all newly opened instances of Rad Studio or Delphi.