How to delete entries on the Comparison Plan Data page?

We are testing the functionality as we want to have it implemented before OE and we made a mistake. Our plan was to only enter the data once for each type of plan and then clone that data to the other plans that have the same specifics. However, we had already created Comparison Data pages for some of these plans and now we can't delete them, nor we can clone onto a Comparison Data page that already exists. is it possible to delete these entries? If we SQL delete, are there other records besides ps_bas_cmp_plan we will need to consider?