Data transfer Creator to CRM

Data transfer Creator to CRM

Hello,

We are currently using an application in Creator to create visit reports to Accounts.
These visit reports are linked and visible on a related list in the ZOHO CRM.

Anyway, we are thinking to stop using Creator and create a custome module in ZOHO CRM for visit reports. How is it possible to transfer all the 30.000 created visit reports in CREATOR to ZOHO CRM Custom Module please ? Without losing any info.
We don't have a lot of fields with info but these are important:

- Visit Date
- Visit report owner
- Account Name (look-up field)
- contact (look-up field)
- Type (Farming/Hunting options) (pick-down list)
- Visit Report Name (text field)
- comments (text field)