Like others it seems flattening a sheet metal part, adding holes, then unflattening means you lose the holes. The solution posed in the past is to create a part, create your folds, unfold it, add the holes, then re-fold it.
As you can see with my attached part, I chose to create an initial sketch using the radius I wanted from the get go, then simply created my sheet metal off of that. If I try to unflatten my part, my holes disappear.
Is there any way around this other than using the fold/unfold solution? I'd rather not re-do this part from scratch.