You can arrange your script to perform a second migration where only the newer items in the source are copied.
Index
Details
Incremental update in PowerShell is the equivalent of using Copy if newer (incremental) in the copy settings of ShareGate Migrate.
The incremental update parameter will only copy list items and documents in your lists and libraries that are newer than their counterparts in the destination.
Tip: We recommend reading the Copy if newer (incremental) article to understand how the feature works and the limitations before using the setting in your script.
How-to
Run a normal PowerShell migration, and then run the operation again with a modified script.
You can modify your script to run an incremental copy with these steps:
Define your copy settings to use incremental copy in a new variable by typing the following line at the beginning of your script:
$copysettings = New-CopySettings -OnContentItemExists IncrementalUpdate
Add -CopySettings $copysettings to your copy line:
Copy-Content -SourceList $srcList -DestinationList $dstList -CopySettings $copysettings
Note: You can use -CopySettings with the following commands: Copy-List, Copy-Site, Copy-Content, Import-Document, Import-GoogleDriveDocument, and Import-BoxDocument.
Examples
You can refer to these examples to better understand how to adapt your script to perform an incremental migration.
With a single migration script
A Copy-Content script using incremental copy:
Import-Module Sharegate$copysettings = New-CopySettings -OnContentItemExists IncrementalUpdate$srcSite = Connect-Site -Url "http://myfarm1/sites/mysourcesite"$dstSite = Connect-Site -Url "http://myfarm1/sites/mydestinationsite"$srcList = Get-List -Name "mysrclist" -Site $srcSite$dstList = Get-List -Name "mydstlist" -Site $dstSiteCopy-Content -SourceList $srcList -DestinationList $dstList -CopySettings $copysettings
With a multiple migration script using a foreach loop statement
An Import-Document script with a foreach loop statement using incremental copy:
Import-Module Sharegate$csvFile = "C:\MigrationPlanning\onedrivemigration.csv"$table = Import-Csv $csvFile -Delimiter ","$mypassword = ConvertTo-SecureString 'mypassword' -AsPlainText -Force$copysettings = New-CopySettings -OnContentItemExists IncrementalUpdateSet-Variable dstSite, dstListforeach ($row in $table) { Clear-Variable dstSite Clear-Variable dstList $dstSite = Connect-Site -Url $row.ONEDRIVEURL -Username "myusername" -Password $mypassword $dstList = Get-List -Name "Documents" -Site $dstSite Import-Document -SourceFolder $row.DIRECTORY -DestinationList $dstList -CopySettings $copysettings}