355399 to transfer a cs-cart store

I have installed the latest cs-cart version in my directory 2.0.8, yet i am using right now an old version 1.3.5 sp4. I need to transfer my old database, my scripts, mods, language translations from the old to the new store. The old store has a script that allows to update the store's catalogue thru a csv and a cron job. I need to transfer the script to work in the new verrsion and improve it a bit so that it does not use up so much resource as it does now. I also need you to analyse my store and provide me ideas or better a proposal for a new design.