Sometimes a film can be patched together from multiple sources to present the movie as intended.
When restoring these films as intended, the VHS source mixed with 4K Ultra HD does not match well, and can never be re-watched in their optimal form.
On this matter David Gregory, founder of the distribution company Severin Films, said: "When we find that an original camera negative has been cut for censorship, it’s gutting, because rarely are those cuts saved.
If they’re cutting the [negative], then for whatever reason the producers decided that this was the version they wanted to survive into the future.
With 1980s films, it was often because the censorship climate changed, favouring less violence and gore as the decade went on.