Allocation rules are creating duplicate data for Elimination of intercompany transactions

Summary:

We need a solution for an issue related to an Allocation rules that we have, which is created to eliminate the IC balances.

We have two ledgers, but the primary ledger is the only one used for this process. Here is an example of hierarchies, in which we are checking between company 100 to IC (Parent-1 & Parent-2) and vice versa and booking that into elimination company 199. This is performed to move the IC balance to Elim company, but when we run the Allocation rule again, it is still taking the same data and doing that again causing the data to duplicate. Is there anyway to exclude the data that is already eliminated?.