diff --git a/ana/bpi.go b/ana/legacy_bpi.go
similarity index 100%
rename from ana/bpi.go
rename to ana/legacy_bpi.go
diff --git a/ana/bpi_test.go b/ana/legacy_bpi_test.go
similarity index 100%
rename from ana/bpi_test.go
rename to ana/legacy_bpi_test.go
diff --git a/ana/contributions.go b/ana/legacy_contributions.go
similarity index 100%
rename from ana/contributions.go
rename to ana/legacy_contributions.go
diff --git a/ana/contributions_test.go b/ana/legacy_contributions_test.go
similarity index 100%
rename from ana/contributions_test.go
rename to ana/legacy_contributions_test.go
diff --git a/ana/interest.go b/ana/legacy_interest.go
similarity index 100%
rename from ana/interest.go
rename to ana/legacy_interest.go
diff --git a/ana/interest_test.go b/ana/legacy_interest_test.go
similarity index 100%
rename from ana/interest_test.go
rename to ana/legacy_interest_test.go