ICEM Surf version up from 4.12 to 2024?

Hello

my customer is planning to version up from 4.12 to the latest or the second latest release of ICEM surf professional, Master and Scan.

i know that;

-license server changed to DSLS

-IGES license is merged to Professional

is there any concerns that he should know before installation?

I'm worried because it is really big jump of 10 years version!

if you have such experience, please give me advice!!!

thank you in advance

Junko