1. I have two content types with relations and invert relations.
2. I have 3 contents with already existing relations but not between each contents described below :
   • Content 1 (C1) of content type 1 (T1)
   • Content 2 (C2) of content type 2 (T2)
   • Content 3 (C3) of content type 2 (T2)
3. I drag and drop the content C2 on the content C1 and I set it to the already filled metadata M1, M1' on C2 is automatically updated too.
4. Then I drag and drop the content C3 on the content C1 and I set it to the emtpy metadata M2, M2' on C3 is automatically updated too.
5. At this step, every thing works correctly.
6. I wan't to rollback on these relations, then I restore the version of C1 between all the drag and drops.
7. C1 and C2 are correctly updated, but not C3, it keep the relation on M2', the relation M2 on C1 have been correctly updated.

Note : During all these operations, the contents were not locked.