ODK data migration

Hello experts, could someone provide guidance on how to migrate data from historical datasets please? What are the available method please?


1. What is the issue? Please be detailed.
ODK as a new organizational surveying tool. Historical data stored on excel in various format. Need to migrate all the historical data onto ODK to create a central data repository in format of the questionnaire.

2. What steps can we take to reproduce this issue?
There has been Questionnaire Tool Iteration before ODK and the problems are both kicking in from the formability as well as the type of the survey answers (free text, choices, numbers etc)

3. What have you tried to fix the issue?
We have tested the ODK and like the way it works. We have separate survey trails and seems ok internally.

4. Upload any forms or screenshots you can share publicly below.
Not this moment.