VIA updates all option-id when a new option is added to an attribute of type SELECT
An attribute of type SELECT (i.e. dropdown) has a set of options to define the choices available in the dropdown menu. These choices can be updated by the user using the "Attribute Editor" in the top toolbar. If the user adds a new choice in the dropdown, the option-id of all other attributes gets changed. This will break all existing annotations. See the illustration below taken from a real manual annotation project which reported this issue.