As Dave says, many of the EW & PluginStores versions are now compatible with v2014 - some just 'were' already!
If you have 'other' plugins from elsewhere - and there are no obvious updates available - then you can try moving copies over... but do them individually, and restart after each one is added, to see if that new addition breaks v2014.
If it produces errors, then disable that plugin and contact the author about an update