Missing balances in Vendor Balances in Local Currency

Hello All,

I am writing because I am facing an issue and I can't find the answer.

We have a posting made on a vendor account which was correctly reconciliate with th GL account for vendors

(2060101000).

The entries are cleared at end 04/20 by a transaction done on 06.07.2020

The problem is there was no existing balances (either cleared or not cleared) for these entries at end of calendar date 30.04.2020 in report s_alr_87012082 -Vendor Balances in Local Currency.

Do you know what could have caused this?