We were having a problem with some trees where some dates in family trees where changed to 1969.
We have now fixed the problem, and users should not experience this bug anymore.
In the case that you do still experience this problem, here is how to solve it;
Please make sure to clear your browser cache, and temporary internet files.
All should be well. If you are still experiencing problems, please contact support.
Esther / MyHeritage Team