After migration from SqlLite to Postgres Orthanc not show old DICOM studies

After migration from SqlLite to Postgres Orthanc not show old DICOM studies!

I use for migration this tool →
https://www.convert-in.com/slt2pgs.htm

But if I upload new image file from browser I can see this new Image.

How can I solve the migration problem?

picture.jpeg

Hello

I paste below previous group replies from Sébastien and Alain regarding such a migration:

HTH