How to import contacts from an excel file ?
Here is a great article from Infusionsoft on it: https://classic-infusionsoft.knowledgeowl.com/help/import-your-contacts
Let me know if you have any questions!
If you are still looking for the import possibility, try out 3rd party service Trujay. That is the way you can migrate contacts from Excel to IS as well as other modules, if required, automatically, no need to convert Excel to CSV beforehand.