I already have shared a script for migrating user mailbox into linked mailbox during the cross forest migration scenario in one of my previous posts, see here. Sometime(I faced all the time) during this process you would have observed that after the creation of linked mailboxes all manually configured limit, mailbox features are set back to the default. I have created two small of power shell command combination to import the features and the limits from a csv file. Set the limit, follow this Mandatorily, we need to extract the each mailbox limit details from exchange data before the linked mailbox conversion. This step is to get the existing values into a csv file, you may use the simple power shell command pated below to export the current data, Get-Mailbox -ResultSize 3000 | select UserPrincipalName,IssueWarningQuota,ProhibitSendQuota,ProhibitSendReceiveQuota, MaxSendSize,MaxReceiveSize,RecipientLimits | Export-Csv C:\LimitDetails.csv The output file will be like, Remove the file line starts…