Can I change the role mapping for PDF tags?

I create documents using Libre writer and then use the export PDF command to create accessible PDF.
LIbre automatically creates a role map which convert the style names into roles that PDF understands.
There are some styles that I use that LIbre maps to /P but I would like to map to a more specific role. For example ‘content heading’ is really a heading and it would be better to map this to /H1.
I can change the role mapping in Acrobat but that is tedious, error prone and not automatic.
Any suggestions or do I have to put this in as a suggested improvement?

I can see no way to change the role mapping for the Tagged PDF export option. There also does not appear to be any open, related enhancement request to obtain this functionality.