Convertor lyx2.1 -> lyx2.2 does not understand TikZ in math macros

[חיים רוזנר]

Hi,
I upgraded lyx 2.1 to lyx 2.2 (Win 10). I have a file with lots of tikz
environments and some math macros. The convertor took the -- line command
of tikz in the math macro and converted it to \twohyphens. This conversion
made me errors.

Attached are a minimal example from LyX 2.1 and its automatic conversion to
LyX 2.2.

Thanks for all your effort.

Haim

TwoHyphens21.lyx
Description: application/lyx

TwoHyphens22.lyx
Description: application/lyx