Hello @Vivek Kumar Sharma . Add this to your select statement:
@{N="mS-DS-ConsistencyGuid-ByteArray"; E={[String]::Join(",",($_.'mS-DS-ConsistencyGuid'|Out-String|Format-Hex).Bytes)}
Regarding "Also, i may be updating these users with ms-ds guid if the one retrieved does not meet in excel file?". What do you mean?