MARQUETTE — Charter Communications and the management of WBUP-TV and WBKP-TV announced Wednesday that an agreement in principle has been reached that will ensure continued carriage of the Upper Peninsula area ABC and CW channels on Charter’s cable systems. As a result, the stations will continue to be shown on Charter systems while the agreements are finalized. “We are pleased to come to an agreement with WBUP and WBKP that will continue uninterrupted carriage of their programming on our channel line-ups,” said Joe Boullion, vice president and general manager for Charter in Michigan.