Hm, never mind, by now they’re both listed on the new widget page… There must have been a system lag somewhere.
For the record, both are listed thru collections/list.json?screen_name=ronaldklip (today, that is. I don’t know about yesterday)
"response": { "results" : [ {"timeline_id" : "custom-733298836710559744"}, {"timeline_id" : "custom-733291371847634945"} ], "cursors" : {"next_cursor" : "Ci0snhfWUAE"} }
Thanks for your reply, danibro.