Expense class not added to Pending payment

Overview: When approving invoice a Pending payment is created for the Fund and Expense class - if an expense class is being used. Currently pending payment does not seem to be attributed with the expense class. Expense class does appear on the resulting payment

Steps to Reproduce:

1. Log into folio-testing environment as User X
2. Click invoices
3. create invoice
4. create invoice line for more than $1
5. Add fund distribution with 1 expense class
6. save invoice line
7. Approve invoice
8. Navigate to Fund transaction history
9. Select pending payment in results area

Expected Results: Pending payment appears in transaction list for the amount defined in invoice. Pending payment displays expense class associated with the transaction according to invoice

Actual Results: Pending payment appears in transaction list for the amount defined in invoice. Expense class appears to be blank.

URL: https://folio-testing.dev.folio.org/finance/transactions/fund/7fbd5d84-62d1-44c6-9c45-6cb173998bbd/budget/d71635df-c08c-49cc-9082-197a30fd0392/transaction/97bb0136-11a4-47b4-b373-f97671f7141c/view