Dear Subramanya,
Thank you. I disabled the antivirus & the data migreation took place successfully.
After this now I opened Tally 9: Selected company & Statutory Masters import started. When it was almost 100%progress , an error message came "Exiting Tally, Internal Error. Software exception c0000005(Memory Access iolation). Restarted the system & tried. Again same problem is coming. Please help!