Migrating to Zephyr Scale

I am working to migrate our test cases from QTest to Zephyr Scale.

I have exported everything from the existing solution.  The export is a zip file containing attachments, and an excel workbook, with each sheet containing testcases.

Based on my understanding, i will need to do the following steps:

* Separate each of the sheets of the workbook, into individual files

* Convert the xlsx files to csv

* Manually import the csv files to Zephyr

* Manually bring in the attachments

Are there any tools, outside of the simple import capability that require these steps?

I have started to look at the REST APIs provided, as an option to do a direct import from QTest, however, before I do, I would like to understand if there is any better tooling available.