Hi Ameet,
I had reviewed this SNOTE earlier and this does not mention uploading of local control data. If you read the upgrade guide attached in the SNOTE in the section "3.3 Maintain data" in this, you may realise that all the detail is relevant to central data upload and not local.
I am interested to know where you read upload of mass subprocess assignment in the MDUG User Guide or in the MDUG template.
My version of PC 10 is 13 and hence well above the required version 10 as per the SNOTE.
I hope this answers your query. Please suggest if you have uploaded MDUG for mass assignment of sub processes.
Thanks,
Mohammed Kashif