"Last Update" field

[Richard]

Can someone give me a definitive description of the "last update" field
(visible when creating a custom formula under Field | Project | Date). I
cannot determine what drives this field. Thanks.

 

[Gérard Ducouret]

Hello Richard,
That's the last date where you published the projet or the assignments :
Collaborate / Publish / New and Changed Assignments

Gérard Ducouret