See list attachedMay 12, 196969-PA-T-75APA/Chief, Apollo Data Priority CoordinationCis-lunar state vector updating procedure change
A lot of you won't care – but I want to make sure that those that need to know, do. It deals with state vector updates from the MCC to the CSM during cis-lunar flight on the G mission.
On the C' mission, state vector updates were always transmitted to the LM slots in computer memory in order to avoid messing up the infamous W-matrix. Since essentially no onboard cis-lunar navigation will be carried out on G, there is no need to protect the W-matrix and the crew has expressed a strong preference for preserving their sacred state vectors onboard the spacecraft. With some justification, they want the ground to update only into the CSM state vector slots, after which they will make some checks to determine if they have been received and stored properly and are reasonable. They will then transfer them to the LM slots for safekeeping. In other words, the LM slots are for the crew to use as they wish. The flight controllers have agreed to do it this way.