Upgrading & Migrating to Tally Prime from any prior version of Tally is simple - these tools are either built into the product itself or available as migration tools that are installed along with the product.
Typically, there will be no need to make any changes to the data post migration - and the transition time could be just minutes - a few hours at most.
Getting a bit more specific, Tally Prime will migrate all data from Tally ERP 9, Tally 9, Tally 8.1 Tally 7.2, onwards, without any assistance. If you have an older version (6.3, 5.4 and so on) you will need to bring your data to 7.2 and then migrate (our Sales & Support partners will be able to help you). In any case these tools are available at no extra cost.
Account Management is now a major feature available in Tally Prime. As part of the 'Control Centre', you have a powerful way of managing your deployments. Included is serial number management.