The majority of Sedgwick County commissioners did future commissions no favors Wednesday in voting to use $1.6 million in arena sales-tax revenue to reimburse the county for county staff time spent on Intrust Bank Arena through 2008. By drawing down arena reserves now, commissioners hastened by perhaps four years the time when the arena's reserves could run dry. The move also redefines the purpose of the arena sales tax in a way that doesn't reflect the 2004 ballot question approved by voters. With the transfer, Commissioner Dave Unruh said, "we're using sales-tax money to support the county budget for functions that we would do normally and naturally." Perhaps as troubling was the bitter tone of the majority commissioners' discussion about the revenue transfer, including talk of "fraud." The fact is, the arena was approved, paid for and built. In just two months of operation, it has changed the quality of life in Wichita dramatically. County commissioners ought to stop fighting it.