In Renzenberger, Inc. v. O'Bryant. No. 13-05-00090-CV, 2005 WL 1361620 (Tex. App.--Corpus Christi June 9, 2005, no pet.), the court addressed whether the appellants had waived their right to challenge venue by making their specific argument in a reply brief instead of amending their original motion to transfer venue. The court concluded that the appellants, in their reply brief, specifically requested that the lawsuit be transferred, and it noted that although the parties' pleading had been entitled "reply" rather than as an amended motion to transfer, the substance of the reply was clear. Id.