Suitecrm 7.11 how to empty/delete the only Accounts database, and preserve custom fields

I started with import on local C: (Bitnami) Suitecrm 7.11 and have first and only big database 50.000 ACCOUNTS file which I need to empty/delete
with preserving the CUSTOM fields and Dropdown lists.

I intend to import again (without some errors found in first import)

How to do ??


You can just delete the rows from “accounts” table on database, if you are sure you want to lose that data.