1. Land to be removed must be completely empty of objects and sims. If it is not, shrinking the lot may result in lot corruption and unexpected crashes. If a sim is currently interacting with an object on land which will be deleted, stop your sim and direct them onto the land which will be kept.- There is now a Browse button on the Lot Selection screen, to allow you to choose a lot based on lot number or date, rather than name.
2. Shifting a building on a lot has not been implemented. If you shrink in one direction, you cannot grow on the other side of the lot. However, these two operations should be able to be done in two separate runs.