Removing Datasets

It sounds like you have entirely separate new datasets powering your new data flows. In that case, you don't have to delete the input datasets to stop using credits, just have them stop updating in the same way that you have the data flows not updating.

To directly answer your question though. If you delete the input dataset to an ETL, the cards powered off of the ETL output won't be deleted, but the ETL will have a missing input dataset, and will not be able to run. Any cards that are powered directly off of the deleted dataset will be deleted as well. You can view the downstream impact/lineage of a dataset to see how deleting it will impact Domo.

Ahh - gotcha. I was referring strictly to credits used from creating/updating tables. Domo does also charge for data storage at a rate of 1 credit per million storage rows per month.

Since you are in the process of migrating, I think this might be worth reaching out to your Domo Rep to explore possible options.

Another possible option would be to aggregate up to an acceptable grain rather than storing all rows. You mentioned that these need to be kept to power cards. Say for example the smallest date grain you are displaying is monthly. You could aggregate these up to monthly, and that would significantly reduce your storage rows and cut down on credits, while still allowing you to power your cards/ETLs that you want to keep for now. You'll have to be careful doing this to make sure that all reports that are connected via ETL will still work (don't change column names, output dataset names, etc), and as I mentioned before, you will want to only aggregate up to the smallest grain that is used.

To be frank, I'm not sure the idea I suggested above is worth the effort. Especially if you're going to be migrating these over the next couple of months. Depends on exactly how many credits are being consumed due to storage rows.