continuity - What happened between Red Dwarf series VIII and "Back to Earth"?

Rimmer:

Rimmer probably didn't survive.

The Rimmer in Back to Earth is a hologram while the Rimmer who kick Death in the crotch was reconstructed by the nanobots. Likely Rimmer was brought back as a hologram from a scan from the reconstructed Red Dwarf or from a back up from before Rimmer was reconstructed.

Kochanski:

She grew tired of life with Lister and left them. Kryton witnessed her leaving and claimed she died to spare Lister's feelings. For much of the time period Lister thought she was dead.

Holly:

became waterlogged due to an unavoidable accident and the scutters are trying to dry him out. He is, therefore, out of commission.

Lister:

Caused the unavoidable accident by... leaving the bath running for nine years. Beyond that he appears to have lounged about the ship lazily for years.

Cat:

looked fabulous.

Kryton:

did chores and seems to have perfected lying.

Unfortunately while I know this is incomplete, I am not aware of much else.