lyx2lyx bug in 2.x -> 1.6.x

[Richard Kimberly Heck]

On 1/6/23 08:41, Jürgen Spitzmüller wrote:
> Am Freitag, dem 06.01.2023 um 13:03 +0100 schrieb Jürgen Spitzmüller:
>> A revert routine is missing that removes the newpage inset before
>> such bibtex insets (in the formats before, a clear(double)page is
>> part of the code the bibtex insert generates.
> Added at d89a48483e3906.

Thanks.

Cherry picked it for stable.

Riki