Was your earlier H1B approval for same client that you started work for in Jan 2018?
Client and Job profile change - are changed H1B
Client and job profile changes are considered ‘changed’ extension application and may not be eligible for premium at Nebraska center at this time.
Talk to employer attorney to know if your H1B changed
You should talk to your employer attorney as they know yoir H1B details to see if anything has ‘changed’.
If not changed, you can upgrade your application is elogelig for premium processing upgrade.
I think ‘new client account’ application will be counted as ‘change’ for the purpose of H1B extension premium processing eligibility at Nebraska service center.