Well, if the JARs say you need a valid license when you START the training you should be ok.
Since the A320 is a multiengine aircraft and you will be doing both multiengine and instrument procedures during your checkride, I don`t see why this couldn`t count as a revalidation
But don`t take my word for it - I`m not totally up to date with the JARs.Just trying to put some common sense into it...
Try
www.jaa.nl and see what you come up with, and if there is nothing else involved, well then you`re good to go!