Managing Baselines
Although your project can have more than three baselines, Open Plan allows up to three baselines to be available for reporting purposes at a time.
You also can change the current baseline(s) at any time. You can display all selected baselines in multi-table views, barcharts, and spreadsheets.
The Summary tab of the Project Properties dialog box displays the current baseline(s) selected for the project.
This can also be displayed on the Baselines dialog box. On the Baselines dialog box, you can select <Multiple Baselines> and click the Select button to display the Multiple Baselines dialog box. You can use this dialog box to select up to three baselines for the project. If the PMB does not exist, Open Plan uses the first selected baseline for cost calculations when you have multiple baselines selected.
If you are not interested in having access to baseline information, you can also specify that no baseline should be loaded with the project. When <No Baseline> is selected, this option has the effect of reducing the memory requirements of a project, and thus has the potential of improving performance. You can also select the Clear baseline data when No Baseline is selected option to clear activity baseline data. This option is enabled only when you select <No Baseline>. You can also do this by selecting <No Baseline> on the Baselines dialog box.
It is also possible to delete unneeded project baselines, which can help reduce the overall size of the project data file.