Multivalue entity reference synchronization I have node type A with Entity Reference multivalue field that can reference other nodes of type A (existing). Is there a simple way/module/workflow/ruleset/other to do synchronization as follow:
after saving new node of typa A (ie. nid=112) referring two nodes (ie. nid 66 and 77) I want node 66 and node 77 automatically have references to 112.
Two way references are described in this drupal.org issue

Corresponding Entity References seems to be consensus solution there, but if it's no good for you, read whole thread, it provides interesting ideas and alternative approaches.