Easter Parade should not be problematic in any way, once restored. I doubt that anyone will notice the difference between orig and master.
The old DVD was most likely derived from a CRI.
All from OCN, with the exception of the <10 minutes from Burma, that's been replaced after the shorter re-issue, and that's from fine grain.
I expect them to be properly Warner Archive beautiful.
By 1947, three-strip Technicolor was in full fashion, with Paramount releasing three features in the format. For comparison Fox released 8.
Cecil B. DeMille's Unconquered, starring Gary Cooper (his fourth Technicolor proaction and Paulette Goddard (her third, if one doesn't count the sequence...