Complex sentence: In 2012, it was originally confirmed that Boyd would reprise the role of Celeste later that year however, it was then confirmed that, due to scheduling conflicts, Beverly Todd would take over the role for a seven-to-ten episode arc.
Split into simpler sentences: In 2012, it was originally confirmed that Boyd would reprise the role of Celeste later that year. However, it was then confirmed that due to scheduling conflicts, Beverly Todd would take over the role for a seven-to-ten episode arc.