Serializing connected sortables

Serializing connected sortables


When I try to serialize a sortable which is connected to others (using
connectWith), I only ever seem to get back results from the original
sortable (#list_1 in my example).
I'm aware I could loop through each of the lists and perform the
serialize function on each one, but this seems like incorrect
behaviour. The old Interface library behaved more logically by making
every list with the given class (.sort in my example) sortable, and
serializing them in the same way. Is there a way I can fix my code to
work properly in UI, serializing all connected lists?
Also is there an easy way to the pass the serialized result to a PHP
script via Ajax (like serial.hash in Interface)?
You can see my code here: http://rafb.net/p/ISWjHZ20.html