Tried to run this to finally finish it.. and got the following:
PS C:\Windows\system32> SetupCrossTenantRelationshipForResourceTenant.ps1 -SourceMailboxMovePublishedScopes "MigScope","
NSSMigration" -ResourceTenantDomain source.onmicrosoft.com -TargetTenantDomain target.onmicrosoft.com
-ApplicationId 77784916-1f66-42d0-b28f-b5ae4f1778c9 -TargetTenantId 645473a2-62c5-4bab-8a6d-837c0d96587c
At C:\Windows\system32\SetupCrossTenantRelationshipForResourceTenant.ps1:1 char:91
+ ... "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
+ ~
Missing file specification after redirection operator.
At C:\Windows\system32\SetupCrossTenantRelationshipForResourceTenant.ps1:94 char:30
+ /* Created by Arian Stolwijk <http://www.aryweb.nl> */
+ ~
The '<' operator is reserved for future use.
At C:\Windows\system32\SetupCrossTenantRelationshipForResourceTenant.ps1:111 char:38
+ background: -moz-linear-gradient(top, rgba(246,246,246,1) 0%, rgb ...
+ ~
Missing argument in parameter list.
At C:\Windows\system32\SetupCrossTenantRelationshipForResourceTenant.ps1:112 char:37
+ background: -webkit-gradient(linear, left top, left bottom, color ...
+ ~
Missing argument in parameter list.
At C:\Windows\system32\SetupCrossTenantRelationshipForResourceTenant.ps1:112 char:76
+ ... webkit-gradient(linear, left top, left bottom, color-stop(0%,rgba(246 ...
+ ~
Missing expression after unary operator ','.
At C:\Windows\system32\SetupCrossTenantRelationshipForResourceTenant.ps1:112 char:76
+ ... it-gradient(linear, left top, left bottom, color-stop(0%,rgba(246,246 ...
+ ~~~~
Unexpected token 'rgba' in expression or statement.
At C:\Windows\system32\SetupCrossTenantRelationshipForResourceTenant.ps1:112 char:76
+ ... webkit-gradient(linear, left top, left bottom, color-stop(0%,rgba(246 ...
+ ~
Missing closing ')' in expression.
At C:\Windows\system32\SetupCrossTenantRelationshipForResourceTenant.ps1:112 char:112
+ ... ft bottom, color-stop(0%,rgba(246,246,246,1)), color-stop(8%,rgba(225 ...
+ ~
Missing expression after unary operator ','.
At C:\Windows\system32\SetupCrossTenantRelationshipForResourceTenant.ps1:112 char:112
+ ... ottom, color-stop(0%,rgba(246,246,246,1)), color-stop(8%,rgba(225,225 ...
+ ~~~~
Unexpected token 'rgba' in expression or statement.
At C:\Windows\system32\SetupCrossTenantRelationshipForResourceTenant.ps1:112 char:112
+ ... ft bottom, color-stop(0%,rgba(246,246,246,1)), color-stop(8%,rgba(225 ...
+ ~
Missing closing ')' in expression.
Not all parse errors were reported. Correct the reported errors and try again.
+ CategoryInfo : ParserError: (:) [], ParseException
+ FullyQualifiedErrorId : MissingFileSpecification