Why should care be taken in the dates applied to different datasets used in Popgroup particularly in relation to migration data?
Why is it crucial to include notes in the POPGROUP files to document what you have done? Due to the ease of using POPGROUP it is quite easy to find yourself with hundreds of varying forecasts based on different assumptions you are testing. If notes are not included and file naming conventions not decided upon at an early stage then it can lead to chaos, duplication of work and a lot of time wasted.