One option would be to convince someone on a prior release to export the project for you. Then import it
However it may be that the changeover in vendor hpe has mis-coded an attirubute. In that case downloading the existing project and using the tool to fix and then upload it can be done. easily enough. Also I have created missing models and added them to imc.
see this post for an overview pdf on how to fix a broken panel.
http://community.hpe.com/t5/IMC/Device-Panel-missing-module-J9309A/m-p/6736172#M1944
Just remember that updates to imc will usally overwrite your changes so keep a copy to re-apply.