Change Edition to UK

Change Edition to UK

Hello,

We are changing ZOHO Invoice edition to UK.
We created new organisation and now exporting all the details.

Contacts and Items are done.
We started with ESTIMATES but it doesn't allow us to import more than 1MB which is pain.
The main issue we have is that Estimate status is not correct.
Where it's status Invoiced, it changed to Draft.

Is there any way we can exceed 1MB and makes Export/Import easier?

Thank you