Hi ad.webu,
I confirm that also my 'ps_specific_price' table randomly flush and keep only few products on discount.
When I re-save reules on my back office the 'ps_specific_price' table returns full of all my products discounted.
Seems that this osccur when I enable (I haven't automatic enabling) a new customer!
Any ideas?
I'm on PS 8.2.1
monak1983