Free Microsoft Power Platform PL-900 Actual Exam Questions - Question 6 Discussion
HOTSPOT You have version 1.0.0.0 of a published Power Apps app. You create and publish version 2.0.0.0 of the app. A customer goes through the process of restoring the previous version of the app. How many versions of the app are displayed in the Version tab for the app? To answer, select the appropriate option in the answer area. 
Two versions show up because restoring just reactivates an existing one.
Only two versions should show up because restoring an older version doesn’t create a new version, it just reactivates the existing one. So both 1.0.0.0 and 2.0.0.0 remain listed without adding extras.
I think the key is that restoring doesn’t publish a new version, it just activates the older one. So the Version tab should still list both 1.0.0.0 and 2.0.0.0 since neither is removed or duplicated. It’s basically just switching which version is live, not creating a new entry. That means two versions remain visible overall.
I think restoring keeps the original versions intact, so both 1.0.0.0 and 2.0.0.0 should still be listed. It doesn’t add a new version number, just switches the active one back.
This one’s a bit tricky without the full interface context, but I think the Version tab should show both versions 1.0.0.0 and 2.0.0.0 after the restore. So probably two versions visible here.