Can't view campaign data with pre-downloads

Within the last week, we listed our app on the App Store for Pre-Download. Immediately after, we created campaign links and sent them around. We are 100% certain that at least a few of the campaign links have generated over 5 pre-downloads, yet we still can't view campaign data.

Is this because pre-downloads are not considered App Store Units, so we won't be able to get the attribution until the launch date?