If your conviction happened prior to 1994, you apparently do not need to register. See the below link:
You need to pose this question for an attorney in Indiana. However, your conviction that occurred ten years ago, was the cause of your registration. So your moving to another state with lower age of consent does not change the nature of your previous conviction and/or the consequence.
I would seek a direct consultation with an Indiana attorney to get a definitive opinion, because failure to register is a new crime and you don't want to get it wrong. Here's one resource that might help:
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