categories moved to roots - Any solution?

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Hi

 

I am having the problem since i Installed Prestashop (1.6.9 fresh install) when i modify a parent category it is moved to roots and i end up with the big mess with all my products.

 

I  found a thread about this here:

 

https://www.prestashop.com/forums/topic/322751-categories-are-moved-out-of-home-category/page-4

 

but so far problem has not been solved..

 

all categories should stay under parent_id 2 but once modified they are under parent_id 1

 

only way i have found is to manually change it back in the database but there must be an answer to this bug....

 

Is there someone with the answer?

 

Thanks

 

Pat