Hello, I am resuming the topic because I thought and commented a lot with my marketing agency. I see an omission in the plugin regarding my question. I will try to explain the situation very accurately, because I believe that other people will have the same problem.
Аs I said, I sell shoes that have different size variations, but everything else like color and price is identical. I need a feed for Google to show the parent product, not variations as separate products.This is because almost identical products that differ only in size will compete for conversions.
I have researched in detail the two options for adding and removing variations, but I see a big omission.
Imagine a situation where I leave only the variation SKU100-36 (Model 100 size 36) in the feed or choose it to be the default. The moment the amount of this variation or the default variation is exhausted, I will lose the whole product and it will fall out of the feed, although I will still have sku100-37 available; sku100-38, etc.