Thu, 19 Dec 2013 17:21:35 +0100 [migration/3.18] add sanity checks before changing symmetric relations
Julien Cristau <julien.cristau@logilab.fr> [Thu, 19 Dec 2013 17:21:35 +0100] rev 9370
[migration/3.18] add sanity checks before changing symmetric relations Delete supposedly impossible relations from the db. Related to #3259713.
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