sometimes three weeks, sometimes three months!
There is no baseline , I have had the preliminary notices come AFTER the registration card a few times!!
Cat
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Anytime I figure I've got this long range thing figured out, I just strap into the sling and irons and remind myself that I don't!
I have never had a registration card take more than 10 days to arrive in the mail so based upon my experience (approximately 10 transfers) they must send it out right away.