MySQL Move specific set of data from from Schema A to Schema B

Requirement as follows: Schema A will have fields: Unique ID Reference ID Barcode Description Cost Price Schema B has: Reference ID (For just a small number of the items present on schema A) Price We require to expand Schema B's Reference ID's with the data present on Schema A by adding the missing rows and the data. So for example Schema B should have Reference ID ABC3434 ------> The only initial values present on Schema B Unique ID ZZA114552 --------> Barcode 2315235242328 ----> Description ------------------------> All taken from Schema A for Reference ID ABC3434 Cost ---------------------------------> Price ---------------------------------> Alternatively Excel files are available to do the same process (preferred).