Session files not using highlighter

[Quitch]

I have a number of JSON files. When I open those files they are detected as JSON and the correct highlighter assigned. When I save my files as a session and then open them via that session they are not detected as JSON (though the doc switcher shows them as such) and are displayed without highlights.

Is there any way to change this, or is it a product limitation?

[Claudia Frank]

Hello @Quitch,

can you check the session.xml file and see it the proper language has been set.
If yes, can you post it?

Cheers
Claudia