[NTG-context] \setupenumerations, alternative=serried is ignored when setting up multiple enumerations

Hi list, While learning the very basics of context, I stumbled upon the following bug: When I try to use \setupenumerations in the latest beta (2013.03.22 12:06) for multiple enumerations, the alternative=... is ignored for all but the first enumeration. A minimal example demonstrating what I mean is attached. This bug, however, seems not to be present in the TL version (2012.05.30) of context. I don't know if this is a well-known bug and apologize in advance if this happens to be the case. Tobias