Migration from Other Payroll Systems to Zoho Payroll

Migration from Other Payroll Systems to Zoho Payroll

I am migrating from another payroll system to Zoho Payroll, but am finding there is no way to achieve my goal. My goal is to completely import in my past history for all employees into Zoho Payroll. I have plenty of exported data (via csv files) that I can import into their system, but there is NO current capabilities for this. I have engaged the Payroll group several times and they have come up with only we can't do that. I have asked to see if they can perform this task in the backend, but I get the same answer.
I don't this request is unreasonable to ask of their payroll system. We need access to our historical data so we can quickly generate reports, if needed, and access the data for any kind of legal related issues that may arise due to unemployment, etc.
Two weeks ago, I was told to enter in past employees as terminated employees instead of entering them in as regular employees and then switching them to terminated employees. Now I see, there is NO way to add in terminated employees. What has changed and why was this removed?
Nothing like trying to resolve a problem and then the goal posts move on ya. This is extremely frustrating to not have a plan to get past this issue.
Are others finding the level of frustrations as I am?