Last modified: 2014-05-07 13:51:09 UTC
https://www.wikidata.org/wiki/Special:SetAliases/Q42 does not by default get loaded with the existing aliases of the item. It probably should as otherwise existing aliases are easily overwritten.
Worked locally in a brief test, needs more investigation
This is very strange as the tests should cover that the value is shown in the text box. Maybe a config problem?
Hmmm it works now. Who knows what happened...