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I need to migrate a site collection from one office365 tenancy to another office365 tenancy.<br />
The moving of information is not a problem, however the moving of users permissions will be a problem i fear.<br />
The reason i fear this is that on Go-Live day I need to remove the domain from the old tenancy and assign to the new tenancy but at this point i fear i won't be able to map the user accounts using my migration tool...<br />
<br />
Process and my concerns. <br />
<br />
Created user accounts on Tenancy 2 (T2) <br />
Migrate SharePoint using ShareGate (3rd party tool) to copy from T1 to T2 (initial copy)<br />
Go Live Day<br />
Remove domain from T1<br />
Add Domain to T2<br />
Assign users on T2 correct domain association<br />
Do Another migration using ShareGate .<br />
At this point i fear the domain change will effect the switch and as such cause me issues.<br />
<br />
Anyone clarify this for me ?<br />
<br />
Both ShareGate and Microsoft have told me to ask the other one!
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I need to migrate a site collection from one office365 tenancy to another office365 tenancy.
The moving of information is not a problem, however the moving of users permissions will be a problem i fear.
The reason i fear this is that on Go-Live day I need to remove the domain from the old tenancy and assign to the new tenancy but at this point i fear i won't be able to map the user accounts using my migration tool...

Process and my concerns. 

Created user accounts on Tenancy 2 (T2) 
Migrate SharePoint using ShareGate (3rd party tool) to copy from T1 to T2 (initial copy)
Go Live Day
Remove domain from T1
Add Domain to T2
Assign users on T2 correct domain association
Do Another migration using ShareGate .
At this point i fear the domain change will effect the switch and as such cause me issues.

Anyone clarify this for me ?

Both ShareGate and Microsoft have told me to ask the other one!

Moving a existing SP site into another Tenancy in office365

Microsoft Sharepoint is a software platform and family of software products used for collaboration and web publishing combined. These capabilities include developing web sites, portals, intranets, content management systems, search engines, wikis, blogs, and other tools for business intelligence and collaboration. SharePoint has a Microsoft Office-like interface, and it is closely integrated with the Office suite.

Microsoft SharePoint

Office 365 is a group of software plus services subscriptions that provides productivity software and related services to its subscribers. Office 365 allows the use of Microsoft Office apps on Windows and OS X, provides storage space on Microsoft's cloud storage service OneDrive, and grants 60 Skype minutes per month. Office 365 includes e-mail and social networking services through hosted versions of Exchange Server, Skype for Business Server, SharePoint and Office Online, integration with Yammer, as well as access to the Office software. All of Office 365's components can be managed and configured through an online portal; users can be added manually, imported from a CSV file, or Office 365 can be set up for single sign-on with a local Active Directory using Active Directory Federation Services.