Ethics question question

Matori

Suppose Jack worked for an investment bank A and participated in preparing an RFP (request for proposal) response to a corporate client. Subsequently, Jack changed jobs and is now working in investment bank B.

If B follows codes and standards, is it ok for B to put Jack to work on the same RFP? Corporate client sent it to both A and B and Jack most likely knows well what A is going to answer.

Feel free to adjust my question if you have encountered different variations of the same problem in your work or studies.