Full Lexicon Lift 0.13 XML is the recommended export method to export lexical data for use in Lexique Pro.
Do the steps in Export a full lexicon (LIFT), and then do the following in Lexique Pro:
On the Lexique Pro File menu, click Open. Select the exported file in the Open Lexicon dialog box. Click Open.
In Lexique Pro, use the Tools menu commands to configure fonts, categories, keyboards, and so on.
The exported file will has the filename extension *.lift, such as Sena3.lift.
https://software.sil.org/lexiquepro/download/ has the latest version.