As far as I know they should be updating automatically when you open the layout then.
There is an option in the Work Environment, but that only relates to background updating (version 20+).
The layout should still update when you open it regardless of this WE setting.
The only other thing I can think of is that you are linking to a drawing from another file.
In my image you will see it says the source file is "Internal".
Does yours show the same?
One of the forum moderators.
Versions 6.5 to 25
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