Any way to load lightmaps with assetBundles _in Flash_?

For the webplayer implementation I was following this (rather old) thread to manually load and assign lightmaps to a dynamically loaded assetbundle: http://forum.unity3d.com/threads/61580-AssetBundles-with-lightmaps

However, this does not work out with the Flash export since the api doesn't come with the LightmapSettings class (and the mainAsset property returns null if Lightmaps were included in the exported bundle somehow, but one could work around that issue using several bundles).

How do I install the lightmaps provided I manage to load them somehow? It must be possible since I can export a lightmapped scene as a flashplayer. Or does unity internally convert all of that to textures? If so, how do I force it to do the same for my asset bundle?