When we try to import an updated export (with import-compatible-export) we get the following error. We only changed some numbers for prices.  in the same style. 

Error at row 0: "duplicate key value violates unique constraint "product_product_combination_unique" DETAIL: Key (product_tmpl_id, combination_indices)=(23788, ) already exists. "

Error at row 1: "duplicate key value violates unique constraint "product_product_combination_unique" DETAIL: Key (product_tmpl_id, combination_indices)=(23865, ) already exists. "

Ect. 

Please let us know how we can make this work.