So the release notes for the WHMCs module say:
"Please note, that due to structure changes in the database, there is no possibility to use old modules (< 1.1.0) after a successful migration."
What specifically can we not use from the past modules? I assume once we create a new server, we just go to each product/service and change the module from websitepanel to SolidCP and configure any needed settings and we are good. Nothing else needed per any of the existing users in whmcs for websitepanel?
It means only, if you are using v. 1.0.1 of this SolidCP module right now and you update it to 1.1.0, then it's not possible to downgrade to 1.0.1 anymore without direct modification of the database. The newest version is changing some values and also the tables for addon and configurable product assignments. But only the data from this module are changed.
WHMCS or SolidCP data won't be changed, so if you want to create a new server and then update all WHMCS products manually to the SolidCP module, then it will work without any problems.
Please test it with one test product, before you change from WSP to SolidCP module, because I don't know if WHMCS will preserve the username and password for a module inside an active service. If the credentials inside the service will be kept, then also the One-Click-Login will work if you don't change anything on the SolidCP side.
If you are using addons, please download the latest version from here: https://git.key4ce.com/SolidCP/v1.0/tree/master/SolidCP.WHMCSModule
There was a small bug with addons, which was fixed this week and is already updated on git.
