Bruce – what Harry said is accurate. If you have a USHandicap or another online service it’s good through whatever you paid for. If not through August then yes you need to make the change before World Am. We sent an email around 1/1/22 with this info, but assume not everyone got it / read it. I will clarify you need to TRANSFER your scores to GHIN, so you should not have any lapse in data so long as you provide your state association with your current GHIN number given to you by USHandicap.
Harry there’s a rumor that the grandfathering will only be 1 year, but I cannot confirm.