Hello!
Yes, on the Vocabulary page you will notice the Import Vocabulary button at the top right. If you click on it, you will see two available options for Vocabulary import - by taping words manually and import them, or to bulk import via CSV file.
All your saved LingQs are listed on the Vocabulary page, you can filter out learned words only (status 4 and checkmarked) and then select them and export. The Export option is under the More Actions button.
In some specific cases, in some lessons, due to bad formatting of imported files each line is considered new paragraph and you can select and save phrases across paragraphs.