The new library is HTML5, but AIR is still in there, and if you are having issues with the new library, at least some folks have been able to start the AIR library after starting P-11 and use that for scanning your runtime and loading things. According to Netherworks and Nerd3D (iirc), there is no mechanism left to -save- things back to the library, but for loading and viewing, you can fire up AIR.

Some folks are having issues with the new library that have been reported already, so if you are one of the unlucky ones, its workarounds until the first SR, which is coming very soon as it is mostly launch bug fixes they say.