Primavera does not assume progress like Microsoft Project does. If you have an activity planned that does not start, Primavera will reschedule the start of the activity at or after the data date. If you want to compare your current schedule progress to a target project, you have to establish a...
You need to turn off automatic calculation. Go to Tools, Options, Calculation tab and uncheck the "Updating task status updates resource status" check box.
I would baseline after each planning stage. I would also save a separate copy of the schedule after each planning stage. This will enable you to compare to a baseline at any stage, and also to re-establish a new baseline with changes at any stage. Remember that baselines in Project are only...