Complex sentence: Its popularity as an eating apple waned, and some orchards were preserved for many years due to its desirability as a mixing apple for cider, however the orchards have not been replaced when they played out.
Split into simpler sentences: Its popularity as an eating apple waned, but some orchards were preserved for many years due to its desirability as a mixing apple for cider. However, the orchards have not been replaced when they played out.