The sync APIs do not identify “no longer available” but existing products.

I continue to find your plugin structure good. But I have to say that you really have a lot of constant problems.
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Anyway,

I was rechecking the prices of some products and I discovered that some were no longer available, counted by the sync API with a changed price (and therefore available product).
Updated manually with the button, the system realized that it was not available.

Well, I don’t know what else to say.
I will synchronize manually. But in the meantime I’ll warn you.