Hi Unmesh G,

Thank you for your post and using Astah Community.

Reuse of models in one project in another (Copying and pasting models between .asta files) is available in Astah Professional edition.
See: Copy & paste between projects
Also Astah Professional has a Merge Feature if you are interested.

Astah Professional Overview





Free trial is available, so please feel free to try and see how it works. Download Free Trial

If this doesn't meet what you are looking for, please let me know again!

Cheers,
SJ