You are able to import members into WishList Member. This allows you to quickly and easily add a number of members to a membership level.
There is something important to note if you have configured a Sequential Upgrade for the membership level the members are being imported into. The Sequential Upgrade will be paused during that member import.
Applying the pause on Sequential Upgrade during member import is related to site performance. If you were to import a large number of members and a configured Sequential Upgrade happened right away, it could result in the site slowing down.
So the Sequential Upgrade isn’t reflected in the members section of WishList Member during an import of members. But the members will still be sequentially upgraded accordingly. The configured Sequential Upgrade will trigger when the cron naturally occurs on the site or when a member logs into the site.
The Sequential Upgrade would be reflected for all members when the cron naturally occurs on the site or it will be reflected for individual members when they login and trigger it.
That being said, you could run a Cron Job so you can see the Sequential Upgrade reflected for all imported members in the members section of WishList Member.