表单设计器在更新项目的控件显示样式上不一致

I've got a project that I started in Turbo Delphi, which I recently updated to D2009, and I've noticed a bit of a quirk in the form designer. All the old forms have a Win98 style applied to them. The buttons are gray with sharp square edges, for example. But any new form I've created since the upgrade displays its controls in WinXP style. If I copy a control from an old form and paste it to a new one, the style changes. At runtime, all controls from all forms are shown in XP style.I've got a project that I started in Turbo Delp