Problem Remplace File PDF

[FMGrupoEHS]

Hi, mi name is Luis, i from México.
I am working with Moodle version 3.10 and I use the PDF annotator plugin version 1.4.
I have a problem, when I create an activity pdf annotator allows me to upload a pdf file, but when I edit the activity and change the PDF the section to upload the file appears blocked.
As much as I search I can not find a solution and I come to ask for your help.

[t-schroeder]

Hello @fernandoIPRL,

we explicitly forbid changing the PDF file after creating the activity. If you switch the PDF the annotations might not make sense anymore. Why do you want to replace the file?

[FMGrupoEHS]

Hi @t-schroeder,

The pdfs we work with are rules and laws, they are constantly changing and corrections arise, that forces us to update the pdf and therefore the activity.
I honestly thought it was a bug in my moodle or some configuration of mine that was causing some error and that is why I preferred to contact you.