Lithuanian dual citizenship, exile, and departure
Why Article 7 is a separate gate from Article 9 reinstatement and which departure, destination, return, and residence facts matter.
Proving Article 9 ancestry is not enough to keep another citizenship.
A separate Article 7 test
The current Citizenship Law normally restricts multiple citizenship but lists defined exceptions. In many reinstatement cases, review focuses on a person exiled from occupied Lithuania before 11 March 1990 or a person who left Lithuania before that date to reside permanently abroad. Descendants can be covered by the defined categories.
For the permanent-departure exception, permanent residence on 11 March 1990 must have been outside Lithuania. The law also excludes a defined person who left after 15 June 1940 for territory of the former USSR.
Facts that need evidence
Record where the person left from, the date and reason, the intended and actual destination, residence status abroad, any return by the family, and the person's permanent residence on 11 March 1990. Deportation and repression files may support an exile claim.
A later foreign naturalization certificate does not prove every one of these facts. It can show citizenship or residence at a later date, but permanence and the statutory departure history remain separate.
A family's return to Lithuania can be decisive. So can movement within territory then belonging to the USSR. These are manual-review issues, not safe automated outcomes.
Other Article 7 exceptions
Article 7 also includes defined birth and adoption situations. Do not generalize them to every person with two passports. For adoption, the exception must arise from the qualifying adoption before age 18.
The other country's law also matters. A Lithuanian exception does not establish what another state will do with its citizenship.