Copy O365 SiteCollection

testdrive.ps1

$SourceWebUrl = "https://sourcesite"
$TargetWebUrl = "https://targetsite"
Set-PnPTraceLog -On -Level Debug

if ($SourceWebUrl.EndsWith("/")) {
    $SourceWebUrl = $SourceWebUrl.Substring(0, $SourceWebUrl.Length - 1)
}
if ($TargetWebUrl.EndsWith("/")) {
    $TargetWebUrl = $TargetWebUrl.Substring(0, $TargetWebUrl.Length - 1)
}

$cred = Get-Credential -Message "Bitte geben Sie die Anmeldedaten eines WebSiteSammlungsadministratorens beider Systeme ein:"

if ([String]::IsNullOrEmpty($cred.UserName) -or $cred.Password.Length -le 0) {
    Write-Error "invalid Credentials!"
    return
}
try {
    $sourceCon = Connect-PnPOnline -Url $SourceWebUrl -Credentials $cred -ReturnConnection
    $targetCon = Connect-PnPOnline -Url $TargetWebUrl -Credentials $cred -ReturnConnection
}
catch {
    Write-Error "it was not possible to make a connection: $($_.Exception.Message)"
    #region Close connections 
    if ($null -ne $sourceCon) {
        Disconnect-PnPOnline -Connection $sourceCon
        $sourceCon = $null
    }
    if ($null -ne $targetCon) {
        Disconnect-PnPOnline -Connection $targetCon
        $targetCon = $null
    }
    #endregion  
    return
} 


#region available Handlers
# All = AuditSettings | ComposedLook | CustomActions | ExtensibilityProviders | Features | Fields | Files | Lists | Pages | Publishing | RegionalSettings | SearchSettings | SitePolicy | SupportedUILanguages | TermGroups | Workflows | SiteSecurity | ContentTypes | PropertyBagEntries | PageContents | WebSettings | Navigation | ImageRenditions | ApplicationLifecycleManagement | Tenant | WebApiPermissions
#endregion

try {
    if ($null -ne $sourceCon) {
        write-host "SourceSite: $($sourceCon.Url)"
        Get-PnPProvisioningTemplate -Connection $sourceCon -Out YourSiteTemplate.xml -ContentTypeGroups "ecspand - Teamspace,Projektinformationen" -ExcludeHandlers ComposedLook,PropertyBagEntries,SiteSecurity,TermGroups,AuditSettings,Features,Navigation,SupportedUILanguages,RegionalSettings,WebSettings,Lists,Fields
    }
    $template = Read-PnPProvisioningTemplate -Path .\YourSiteTemplate.xml
    
    #region Lists & WebSiteSites
    for ($i = $template.SiteFields.Count - 1; $i -ge 0; $i--) {
        $field = $template.SiteFields[$i]    
        if ($field.SchemaXml.Contains("Name=`"_DisplayName`"") -or $field.SchemaXml.Contains("ReadOnly=`"TRUE`"") -or $field.SchemaXml.Contains("Hidden=`"TRUE`"") -or $field.SchemaXml.Contains("Sealed=`"TRUE`"") -or $field.SchemaXml.Contains("Group=`"_Hidden`"")) {
            $template.SiteFields.RemoveAt($i)
        }

    }
    #endregion

    #region Lists & WebSiteSites
    for ($i = $template.Lists.Count - 1; $i -ge 0; $i--) {
        $listInstance = $template.Lists[$i]
        write-host $listInstance.Title
        if ($listInstance.Url -eq "Style Library") {
            $template.Lists.RemoveAt($i)
        }
        else {
            for ($j = $listInstance.Fields.Count - 1; $j -ge 0; $j--) {
                $field = $listInstance.Fields[$j]
    
                if ($field.SchemaXml.Contains("Name=`"_DisplayName`"") -or $field.SchemaXml.Contains("Sealed=`"TRUE`"") -or $field.SchemaXml.Contains("Group=`"_Hidden`"")) {
                    $listInstance.Fields.RemoveAt($j)
                }
            }
        }
    }
    #endregion
    
    Save-PnPProvisioningTemplate -InputInstance $template -Out .\YourSiteTemplate.xml -Force
}
catch {
    Write-Error "Error modifying template: $($_.Exception.Message)"
    #region Close connections 
    if ($null -ne $sourceCon) {
        Disconnect-PnPOnline -Connection $sourceCon
    }
    if ($null -ne $targetCon) {
        Disconnect-PnPOnline -Connection $targetCon
    }
    #endregion   
    return
}

try {
    if ($null -ne $targetCon) {
        write-host "TargetSite: $($targetCon.Url)"
        Apply-PnPProvisioningTemplate -Path .\YourSiteTemplate.xml -Connection $targetCon -ExcludeHandlers SiteSecurity,TermGroups,Navigation -ClearNavigation
    }
}
catch {
    Write-Error "Error applying template: $($_.Exception.Message)"
    #region Close connections 
    if ($null -ne $sourceCon) {
        Disconnect-PnPOnline -Connection $sourceCon
    }
    if ($null -ne $targetCon) {
        Disconnect-PnPOnline -Connection $targetCon
    }
    #endregion   
    return
}