This process is important as Avocadostore requires sellers to group their products. If you for example have the same T-shirt in five colors, you are required to group them into one parent product called T-shirt with five variants. One variant for each color. A product can have multiple options creating variants. Another possible variant would be size. The goal is, that the consumer opens the store and sees only one parent product with many variants. So the store only shows T-shirt. Then the consumer picks color and size.
So let's get started on merging your products.