Hi ST.
% Complete does not automatically roll up - this is correct and by design. Assuming you're using Clarity timeseheets/actuals (posted from Clarity or a 3rd party system imported to Clarity) and you're interested in an automatic roll up of labor progress against estimated work (ETC),
% Expended is the proper measure for this. If you're 'all in' Clarity, this should be the best measure for 'how far into this are we?".
% Complete is by design a manual entry (until a task it marked 'completed' and then it's 100%, but doesn't automagically roll up) - if interested, I have use cases that demonstrates why this is a good thing. Later Clarity releases provide the ability to automate updating % Complete based upon the business rules of what '% Complete' means to an organization (this is a better thing!) with an
Update % Complete job and a
% Complete Calculation Method on the Project.
From the 12.1 Online Help:
When you post actuals, the Update % Complete job runs and calculates the % complete for tasks and projects based on the value of % Complete Calculation Method for each project.
I'm not quite sure which release all this came together in. If you're on 8.1 and this functionality would provide value to your organization (looks so, eh?) I'd advise evaluating an upgrade.
HTH,
-R