This reminds me of VA Supplemental Claims. Can I file a Supplemental Claim?
You can file a Supplemental Claim within 1 year of a decision if you have new evidence , unless one of these rare situations applies to you .
Do you also have knowledge of claims? Does this hold true even if I file a Board Appeal?
Yes. Remember you can request a Board Appeal after an initial claim, a Supplemental Claim or Higher-Level Review decision. But remember also, that you can't request two Appeals in a row.