Products updating every night

Hi there,

We are retrieving all the products, which is this entity:
Everything is working as expected. Expect for one thing. We are continuously retrieving products, so using the „UpdatedAt“ field we only want to retrieve the products which were updated since a certain time, which is more efficient.
Unfortunately, we see that almost all the products update between 1 and 2 AM, which means we still retrieve all the products, instead of only the ones that really changed.

My question, why are all the products updated every night? Even-though we are not updating anything from our side.

Hope my question is clear,

kind regards, Ed

Must be a plugin or something, that updates your products. Many of my products still have the same createdAt and updatedAt date.