Forrest,

When you update, don't just update the actual start / finish, also update the relationships to reflect what actually happened.

(NB: You should also investigate to understand why your original sequence was not followed -was the original relationship wrong? were you using relationships to balance resources? Is the project operating at higher risk to save time?) 

This will fix your problem regardless of whether retained logic or progress overide option is used, and is considered best practise for planning professionals.

Cheers,

G

Forrest,

This is known as out-of-sequence progress, use the term to search literature on it. Most probably you are using the retained logic option.

How the software handles out-of-sequence depends on the available options provided by your computer. Retained logic gives extreme results but viable while progress override might seem like it is, but usually it is not. As a matter of fact usually a mere change in lag value will correct logic. Other times links must be changed, usually when a FS link is broken you can opt to change it to a SS relationship with lag plus a FF relationship as the original FS relationship implies. Another option would be to split the predecessor activity into two as to model the plan using FS logic but it adds an activity that will create issues at the time of comparing against a baseline that do not have such split.

Best regards,

Rafael