OKS Invoice with multiple events

Hello,

I have non balanced journal entry errors in 'Create accounting' for receivables due to the following :

Some OKS invoices with computed revenue recog records have two gl_date values in 'Distributions' section, which is fine, but there are two events generated in xla_event, one for each gl_date, and, as each event is considered as journal entry, it is non balanced obviously.

My question is why (or when) do we have two events for two gl_dates some times, while we have one event for two gl_dates most of the time ?

Hope it is clear.

Thanks;