I don't remember any more how this worked out, sorry.

I only remember that #+latex_header, if set in a wrong way, breaks almost everything. One of the things it's breaking is C-c C-j, but it actually breaks more. 

Moreover, I had both files in the agenda list, so this may be a potential "mis-coupling". 

But I sent faithfully reenact the setup of March.

Sorry

Bastien <bzg@gnu.org> 於 2020年5月24日 週日 19:54 寫道：
Hi Vladimir,

Vladimir Nikishkin <lockywolf@gmail.com> writes:

> How come org knows the connection between the first and the second
> file? There are not any references to the second file in the first one
> whatsoever.

I cannot reproduce the problem.  Can you reproduce it (without adding
that much contents to the second file)?  Otherwise I don't see where
the error can come from.

Thanks,

--
 Bastien