Apologies if this question is answered in a FAQ -- I couldn't find an answer.
I created my MTGCardsmith account a couple of years ago, but I don't log in all that often.
Today is the second time I logged in after being away from the site for several months (not sure exactly how long) only to see that all the cards I created in the past have vanished.
Is this normal? How often is it done? Does it happen periodically no matter what, or only if you go a while without logging in?