Hi Shubham

The version number! 🙂

The key difference is the development tool (meta dictonary and surface)
But you can import and compile (almost) all components with UnifAce 10 without a problem.
An your end user will not find a difference at all.

Some things are not longer supported which were already deprecated in UF9
eg.: there is no longer a URR/DOL but "resources"
"IDF ... ?" does not work anymore as mentioned in other thread

Just export your whole meta dictonary from UF9 and import it into UF10
After a while (can take some time) your new meta dictonary is created and you can compile all components  ( "IDF /all" )

Just a tip:
Be sure that your pathes (all of them) are proper set. Pointing to a new sub directory other the old UF9 one.
Else you got a little bit of a mess 🙂

Ingo

There are a whole bunch of new logical settings to check out in the idf.asn. Don't just copy in your old one, check out the installed one first and cut and paste what you need from the old setup. 

Also, the IDE is pretty sparse without the additional commands, so check out the downloadable ADDITIONS.uar and how to configure it. 

Also, if you used the old additional menu, that can still be done, but it's a completely different thing, so you'll need to check that out too.