Migrating to the new web services based publishing for Office 365 IP Addresses and URLs

Could you please answer the below questions?

*Question

①”ClientRequestId” It seems that the same response as that used in the past is returned.

Do I need to use PowerShell every time Or will the update page, such as the URLs below, be available every time after October 2, 2018?

<Office 365 URLs and IP address ranges>

URL:

https://docs.microsoft.com/en-us/office365/enterprise/urls-and-ip-address-ranges?redirectSourcePath=%252fen-us%252farticle%252foffice-365-urls-and-ip-address-ranges-8548a211-3fe7-47cb-abb1-355ea5aa88a2

② What is the ”instance”? If the base in Japan, can I specify it "Office 365 worldwide commercial" of five service instances?

③

>> ER: This is Yes if the endpoint set is supported over Azure ExpressRoute with Office 365 >>route prefixes. The BGP community that includes the route prefixes shown aligns with the >>service area listed. When ER is No, this means that ExpressRoute is not supported for this >>endpoint set. However, it should not be assumed that no routes are advertised for an >>endpoint set where ER is No.

If the response of ”expressRoute” is ”True” in the endpoints web method,

Is the URL or IP available only on ”expressRoute”?

④

>>However, it should not be assumed that no routes are advertised for an endpoint set >>where ER is No.

Assuming the above, should an endpoint be allowed or deleted even if ER is No?

⑤ Is it possible to get data from all the past specific time endpoint? 

     If possible, please let me know how.

⑥ Most of the data so far have been reflected after the disclosure of information has been activated, but is there any problem in the future as well?