Factory Cal question

[Bent72]

On 8051 ecm for an original 94 Auto F body, 3.23 (confirmed). When I ran the EEHack, it pulled the vin and factory cal

The cal stored in the ECM is 16199611

(edit)
Per FBody, it updates to 16210011
(note: the information on Fbody differs from the EE_CALIBRATION_LIST PDF)



So before I do anything inside the ECM, why shouldn't I put the corrected cal in there?
And I'll be honest, 100% noob