Unexpected updates on field "report_card.updated_at"

Hi,

For internal processes we track updates made on report_card by our data team.

For this, we use the API and the field "card.updated_at".

But for unknown reason this one is sometimes updated on some cards even if we have not made any change.

Is there any Metabase internal processes which generate an update of this field ?

FYI we are using the version v0.42.4

Thanks for your help