AO map not baking correctly on a seperate mesh texture

[TedGee]

I've modeled a simple shoe that was set up in Maya. All the maps are generating correctly except for an AO map on these 2 pieces- getting strange artifacting- heel section is getting some lace shadows. I'm using default settings for map generation, so any help is appreciated, thanks

[TedGee]

Those objects had overlapping UVs and AO map generated correctly after UV mapping was fixed