I would like to find out the variance between baseline start 1 and actual start. However, I realised that the start variance value as seen from the Variance table actually shows the difference between the baseline and actual start. How should I go about getting this value? Thanks!
In "Options", find the EV calculation choice and choose Baseline 1 for your EV calculations. I don't have 2007 anymore so I can't direct you more specifically. But the EV Calculation method is where you need to make the change from baseline to baseline 1.
Another way to approach this is to save your old schedule as Baseline1, then do your schedule modifications and rebaseline as Baseline. I've found this to be a bit easier to remember to do compared to changing the EVM options.