Hi from Paris,
In France, a divorce is recorded on wife's & husband's vital records registered in France.

• on their birth vital records but in your case, they weren't born in France
• on their mariage record in France, but they weren't married in France
• perhaps on their death record if death was declared by a second wife, I am not sure.

Concerning the divorce note sent to France, it could have been sent to a lawyer (to prepare for a second mariage) or to prepare a naturalization file.
If it had been sent to any French administration, there is no way to find it (only by report to vital records as written above).

But some traces of this divorce could be found if these persons stayed in France for some part of their life :

• another mariage
• naturalization file
• birth vital record of a child (the fact that the mother or the father was divorced should be noticed)

With identities of these persons and some data from you, we could do some check, you can send by private message.

Khavershaft
Bernard Flam
Archives & history of Medem Center / Arbeter Ring of France (Bund / Worker Circle)
Weekly workshop of Jewish genealogy (France & Yiddishland)