Not to be flip, but neither one! You shouldn't be entering the dates at
all, whether before or after indenting. The whole reason for using Project
is to calculate the schedule - you don't tell it the dates you think tasks
will occur, it computes those dates and tells you when they SHOULD occur in
an optimum schedule. Trying to second guess its calculations by supplying
dates except for isolated tasks and under very specific circumstances is
going to lead to serious difficulties for you. You designate the project
start date, link the tasks according the process sequencing, assign
resources, and level if necessary, and Project will calculate for you the
dates on which tasks should be scheduled based on the information you've
given it.