It works better if you only restore the folders that are shown as in very good condition.
You shouldn't have lost any data using the undelete - it copies the data from the hd - it will still be there.
You could scan again and this time only restore the files marked as very good condition. Scan the drive, then click the Filter button at the top right.
In the new window that opens, tick the box By State, select Very Good, and click OK.
Any files that are not in very good condition will have some damage and are probably not worth bothering with.
You could then do the same thing with another program , eg Recuva and see if that rescues anything different .
Hope it helps