I have a .tex file containing a table. In my master Lyx document I went to Insert > File > Child Document and entered the file. It compiles fine, but I'd love it if I could see a preview of the table in the master Lyx file, without having to compile to view it.
It looks like this functionality is supposed to exist, because in the Child Document window there is a checkbox for Show Preview. However, checking the box and clicking OK doesn't seem to do anything (I even tried restarting Lyx). I've verified that Instant Preview is turned on under Preferences > Look & Feel > Display.
According to this discussion, if I'm using version 2.0.6 or higher I should be able to see a preview. I'm working in Lyx 2.1.4. Any ideas? Does preview only work if the child document is a Lyx file, not a LaTex file?