Update New-MailboxImportRequest.md

Author: chrisda

exchange/exchange-ps/exchange/New-MailboxImportRequest.md

@@ -482,12 +482,12 @@ Accept wildcard characters: False
 ### -ConflictResolutionOption
 The ConflictResolutionOption parameter specifies what to do if there are multiple matching messages in the target. Valid values are:
 
-- ForceCopy (not available in Exchange Server 2013.)
+- ForceCopy (Exchange 2016 or later)
 - KeepAll
 - KeepLatestItem
-- KeepSourceItem (This is the default value.)
-- KeepTargetItem (not available in Exchange Server 2013.)
-- UpdateFromSource (not available in Exchange Server 2013.)
+- KeepSourceItem (This is the default value)
+- KeepTargetItem (Exchage 2016 or later)
+- UpdateFromSource (Exchange 2016 or later)
 
 ```yaml
 Type: ConflictResolutionOption