Tax Class not synchronize when duplicated

Hi @dbriard thank for your valuable feedback , you are totally correct tax class and tax status are note synced , I’ve just soveld the problem and pushed a new update for the pluin in project repo on Github , you can download the plugins from there in order to solve the problem now and the fix will be included in the next version.

For using duplication from PHP , the class was not meant to be used out of its scope but I’ve could consider such a thing in the future.