ORIGINAL:
You can add, edit, and test features in your new integration version just as you did in the original version. All you need to do is switch between your integration versions to add changes to the new version, not the original.
BETTER:
You can add, edit, and test features in your new integration version without modifying the original version. To do so, switch to your new integration version before adding changes.
EXPLANATION:
The phrase “just as you did in the original version” is unnecessary information. What is relevant to the reader is that the original version is unchanged. The phrase “All you need to do” is colloquial writing and should be avoided.