Hi, it appears that be the order in which the effort/duration etc. fields are entered/edited, changes the calculation from % of effort completed to a % of time elapsed.
When entering a new task, typically I enter those details in the order:
(accept the calculated duration)
Assign a resource
Effort (overwriting the calculated effort - typically my resources will only work part-time on project work e.g. 4 days of effort may require 4 weeks duration)
Effort completed (amend as needed)
Effort remaining (accept the calculated value)
% complete (accept the calculated value)
..this works fine - regardless of the start/finish (calculated duration), if I set:
effort of 100 days
update effort completed to 50 days
effort remaining will be 50 days
% complete will be 50%
However, if I then change the start or finish date – at this point the % complete calc changes to an unknown calculation which is neither % of effort or elapsed time. Even when putting the fields back to their original values, % complete doesn’t return to original value?!