在这样的情况下，如果系统恰好在不合适的时候死机了，那么前面刷新过的元数据会导致文件内容整个丢失。
In these situations, the early flushing of metadata could cause the entire contents of the file to be lost if the system happened to die at the wrong time.
丢失的文件容易引起各种问题，因为它们会导致 “The image/page cannot be displayed” 之类的错误消息。
Missing files are problematic because they result in error messages such as "The image/page cannot be displayed."
然而，在这种情况下会收到这样的警告：在概要文件迁移过程中很可能会丢失数据。
However, be warned that in this case it is most likely that there will be data loss during profile migration.
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