I hope you are correct because I agree with you. My opinion is, in states where the law obligates the bank to return the original check, then it would have to return the substitute check. mdmtx doesn't indicate what state he or she is from. However, the question was sophisticated enough that I assumed mdmtx would have mentioned being in one of the states where the relevant provisions of the UCC do not conform to the model language. Of course, you know what happens when you assume...
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In this world you must be oh so smart or oh so pleasant. Well, for years I was smart. I recommend pleasant.