Identify DBIs in Seniority Date V3 with V1

We were not able to migrate with Seniority Date V2. Therefore our organization still uses V1 in our current activities. Having move on to V3 Now we want to identify the areas which gets impacted. Therefore as a sub task we are currently identifying the impact on Fast Formulas.

To do so we need have a proper mapping of DBI, what is the respective V3 DBI to relevant V1 DBI.

Ex:- DBI_1 (V1) =⇒ DBI_3(V3)

Kindly seeking community advice whether there Is any possible way we can do this?