Is it possible to convert materials from LWRP to HDRP?

I have some assets that were originally created for LWRP and I’m trying to use them in an HDRP project but the “update project materials” option doesn’t work.

Is there something wrong or is this just not possible?

For anyone else in this situation,I found that by switching all of the shaders to Standard first and then using the update option did convert them.