T1 entrepreneur 开办公司?

在某个网站上看到:“您必须在拿到首次签证或以创业移民签证入境英国后的3个月内立即进行具体的商业行为”???这个有这个必要么?

Guidance上写的: " You are engaged in business activity at the time of your application to extend your leave to remain and you provide the specified evidence to show that on a date no earlier than three months prior to the date of application"
这个不是续签申请前3个月 公司是激活状态?怎么入境就要激活生意? 一头雾水啊。

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