Q12. Scenario: A Citrix Administrator has been advised that additional Windows users will need to access the on-premises Citrix Virtual Apps and Desktop Site. The Site utilizes Citrix Profile Management for all users. The new users have been using Windows Roaming Profiles and will need their existing profile information when they use the Citrix Site. The administrator enables the Profile Management policy setting for ‘Enable Migration of Existing Profiles‘. At which stage will the new users‘ Roaming Profiles be migrated to the existing Profile Management store? （场景：一名Citrix管理员已经被建议，额外的Windows用户将需要访问本地的Citrix虚拟应用程序和桌面站点。该网站对所有用户使用Citrix配置文件管理。新用户一直在使用Windows漫游配置文件，他们在使用Citrix网站时将需要他们现有的配置文件信息。管理员为“启用现有配置文件的迁移”启用了配置文件管理策略设置。在哪个阶段，新用户的漫游配置文件将被迁移到现有的配置文件管理存储中？