Why don't you just click the add button to add it back in.
It does look like the refresh metadata is missing for Essbase apps.
You can use REST to refresh the metadata using a POST method and body of
Not sure on REST then have a read of More to life...: FDMEE and the REST is up to you – Part 1
Yeah, that's what I did before. But if I assign the manually added dimension, which is Scenario, to the Target Dimension class Scenario, we are having problems in drill through (blank Drill Through tab is displayed when I drill through from Smartview)
In order to fix the issue, I need to assign the added dimension to the Generic class and have a mapping for it. Which is why I want to try having the original Scenario dimension by refreshing the metadata.
Well you can try by the method I have provided.