Search for Business Object Type - BUS5* - there you can find all you need for TRM to create and manage your deals:
+ BUS2042 Financial Transaction
+ BUS1076 Financial Products
+ BUS1074 RedemptionSchedSet
+ BUS1064 RedemptionFactors
+ BUS1062 ExtSecurityAccStmnt
Also you can use BAPI from Business Objects to create LSMW Projects.
Here: IMG -> Financial Supply Chain Management -> Treasury and Risk Management -> Transaction Manager -> General Settings -> Tools -> Legacy Data Transfer -> ... you can find all tools for Legacy data transfer.