ETHICS - seemingly conflicting record retention recommendation

just going through ethics in the CFA curriculum. Pg 88 under record retention recommends maintaining records for 7 years. THen pg 203 under asset manager code recommends six years. though the former is in the standard of practice and the later in the AMC i think the recommndation should be thesame. or am i missing something?

The AMC code is distinctive and applies to Asset Management companies. The standards of practise applies to individuals CFA members and candidates. So the recommendations on retention of records are different.

Is Level III ethics any different than Level II? The only difference I see is that there is a managers’ ethics section, but those standards seem to mirror the first section.

Asset manager code and the article ethics in practise is the only new material.