Complex sentence: However, CBS only allowed the advertisements if P&G refrained from disclosing the network to which the show was moving in their advertisements-which was also decreed for "The Edge of Night" before it moved to ABC in 1975.
Split into simpler sentences: However, CBS only allowed the advertisements if P&G refrained from disclosing the network to which the show was moving in their advertisements. This was also decreed for "The Edge of Night" before it moved to ABC in 1975.