I got below error when i import organization for CRM 2015 

i performed below step for Migrate CRM 2013 to CRM 2015.

  1. Take CRM 2013 Org_MSCRM db and restoe on new server.
  2. For CRM 2015 deployment manger import organization.

I got below error for this.

If the Base and Extension tables are merged, this may exceed the architectural limits of Microsoft SQL Server, and the merge operation might fail. There may be too many attributes per entity. To correct this, try removing any unused attributes, or move some attributes to a related entity. The following tables exceed the limit of 8060 bytes:
OpportunityProduct (20371 bytes)
QuoteDetail (19694 bytes)
SalesOrderDetail (19712 bytes)

Anyone help me on this.

Thanks in advance!