Help: too many curves make saving slow

I’m currently working on a project that involves pretty detailed maps. They only take up a little more than 200 K compressed, but they make up about 31 000 curves and that makes working with the FLA-file painfully slow. Even on a dual 2.5 GHz PowerMac G5 every save takes half a minute.

I am looking for alternative ways of working with the maps. Ironically, once compiled and uploaded, the maps are no trouble at all, it’s the slowness of the authoring I can’t bare. I tried creating a SWF to hold only the maps as linkage enabled library symbols, but it seems I cannot use attachMovie on a symbol that resides in a dynamically loaded SWF file.

Any suggestions?