Installing a virtual printer in CUPS that maintains selectable text in PDF

Hello.

We have been using a virtual printer on Windows that conserves the propieties of PDF, including selectable text.

We wanted to switch to Ubuntu with a CUPS server, using CUPS-PDF. For somewhat reason the selectable text on the PDF stop working and I become a plain image in PDF format.

Anyone knows if it's possible to keep the selectable text while using virtual printers?