They may have sold the well to another producer. If another producer with several other good wells nearby acquired the well, then the production numbers would go up. On the TxRRC website, production is lumped together by lease, not by individual wells. Not very good for finding out detailed information on individual wells. For that, you would need other sources. As far as I know, it is the TxRRC that assigns lease numbers. It is not uncommon for later phase producers to be different than the original one.