从自定义ASP和ASP.NET应用程序迁移到PHP（Typo3）

So we've hired a company to migrate our three websites from custom built CMS solutions to Typo3. One of our sites is still in classic ASP while the other two are in ASP.net 1.1 & 2.0. Typo3 wasn't my choice, but the choice of those with the purse strings. Anyway, the migration of the sites is progressing but I have a problem that nobody seems to be able to answer. How do we handle page redirects?So we've hired a company to migrate our three w