If I move multiple nodes I get the array of selected nodes with data.rslt.o but data.rslt.op (old parents) is always a 1 element array. How can I get the old parent of every moved node ?
This is known open issue/bug. Check this out...
https://github.com/vakata/jstree/issues/99
https://groups.google.com/forum/?fromgroups#!topic/jstree/d8wnINfrAuw