[Design] EIM and end-user mental modeling - relationships between attributes

[Mimi Yin]

The second EIM - end-user modeling issue has to do with relationships  
between attributes.

2. There are dependencies between end-user attributes that aren't  
reflected in EIM. One example of where this is a problem is:

+ User A changes the end-date on a recurring event which results in  
the deletion of the last 3 occurrences.
+ User B syncs and sees a pending change to 'delete' the last 3  
occurrences.
+ If/when user B discards that pending change, the 3 occurrences are  
simply left as 'orphan' events.

There's currently no way to 'rewind' so-to-speak and 'undo' the end- 
date change and restore the last 3 occurrences as members of the  
recurring series.

Morgen, Jeffrey, Grant? Do I have this right? Are there other examples?

Mimi
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