ETL Should be in BI 7.0 or BW 3.5

Hi Gurus,

Our project is in its budding stage. Given that BI 7.0 having transformation involved in the ETL process and all the business content is in B.W 3.5 i.e transfer rules and update rules.

In what direction should we go for Master Data and Transaction Data.

For Master Data

Should we migrate all the data sources for Texts and Attributes to 7.0 transformations. In that case didn't we lose the functionality , coding delivered by the business content.

Please explain for each case individually 1) Texts 2) Attributes.

Think about the Major master data like G/L accounts, company code, customer, vendor etc,,,