we have two attributes for color. A multiple select color (for all used colors on a shirt) and a select color main_color for Google shopping.
Now we have some shopping extensions that default to the color attribute. And break because this is a multiple select instead of single value. Now we could just change that. The problem is that these attributes have been populated for all our products.
Question: is there an easy way to switch the attribute code for these two attributes - whilst keeping the values linked?