Share symbol with AS3 linkage name

In an AIR project, I'm trying to share a symbol (at author-time) across multiple XFL files, then published as SWC files.

I'd like this symbol to have an AS3 linkage name.

It seems that publishing the symbol from multiple XLFs to multiple SWCs with the same linkage name causes conflicts at runtime (when I compile the AIR project).

If I uncheck Actionscript export for the symbol in all XLF files (but one = the source XFL), it checks again automatically, since the auto update option is checked. I could uncheck the auto update option, but then I don't really see the point of sharing the symbol...?

I don't think that sharing the symbol at runtime would be an option for me: an URL is required, and I don't have any since it's an AIR app.