APPROVED ANSWER
replied on March 13, 2015
The procedure should entail the following steps...
First, use the Settings Bundler to export your WebLink 8 settings to a folder. Then, before you import them into WebLink 9, I would suggest also exporting the WebLink 9 default settings to a different folder so you have an easy way to revert back in case anything doesn't transfer over well. Then, it should be as easy as importing the WebLink 8 bundle into 9.
For both WebLink 8 and 9, the Settings Bundler can be found in the utilities folder.