The text generation tools available in the Laserfiche client are unable to read text in a fillable PDF’s alterable fields. Even so, you should be able to keep up-to-date text associated with your fillable PDFs! You’ll want to go into your New Document settings and make sure they look like this: 

Specifically, check that your client is set to generate searchable text, generate Laserfiche pages, and retain the original PDF files when importing a PDF document.

Then, go into your Generate Text node and open up the Advanced Setting for PDFs. From there, select “use an alternative method to generate text” and “OCR existing pages”.

With these settings, the fillable PDFs that you save back into the repository (either as new versions of existing documents or as new documents) will have a TIFF image associated with them. The OCR engine will then be able to read all of the text off of the image file, while you still have the electronic document available to you to continue working with.

I hope this helps! Let us know if you have any further questions.