A script link is added via a Custom Action (see this post) to a site collection, site, library etc.
I wanted to migrate a site collection in Office 365 with Sharegate, but couldn't find out whether this would include custom actions (our script links).
After the migration I ran the following PowerShell script to find out what was deployed (code from here).
[System.Reflection.Assembly]::LoadWithPartialName("Microsoft.SharePoint.Client") [System.Reflection.Assembly]::LoadWithPartialName("Microsoft.SharePoint.Client.Runtime") $siteUrl = "site" $username = "admin user" $password = "password" $SecurePassword = $password | ConvertTo-SecureString -AsPlainText -Force $ctx = New-Object Microsoft.SharePoint.Client.ClientContext($siteUrl) # SharePoint Online $credentials = New-Object Microsoft.SharePoint.Client.SharePointOnlineCredentials($username, $SecurePassword) $ctx.Credentials = $credentials $rootWeb = $ctx.Site $ctx.Load($rootWeb) $ctx.ExecuteQuery() $caColl = $rootWeb.get_userCustomActions() $ctx.Load($caColl) $ctx.ExecuteQuery() Write-Host Write-Host 'Total number of custom actions: '$caColl.Count $count = 1 $caColl | ForEach-Object { Write-Host $count')' $_.Name $count++ }
As it turns out, Sharegate didn't migrate the custom actions. I emailed the support team and they have confirmed this isn't going to be developed any time soon. For now we can keep deploying it with our old console app.