The ABC continued erasing older television output until the late 1970s.
Show (1964–1967), Kommotion (1964–1967), Uptight (1968–70), and the Happening 70s series (1970–1972).
The Nine Network discarded copies of some of their programs, including the popular GTV-9 series In Melbourne Tonight hosted by Graham Kennedy.
Much of the videotaped ABC programme material from the 1960s and early 1970s was erased as part of an economy policy instituted in the late 1970s in which old programme tapes were surrendered for bulk erasure and reuse.
This policy particularly targeted older programmes recorded in black-and-white, leading to the loss of many recordings made before early 1976, when the real reason is that Australian television converted to colour.
From 1968–1969, Rede Tupi produced new episodes of the soap opera Beto Rockfeller by recording over previous episodes; as a result, few episodes survive.