Adding to this, the "Preserve PDF Annotations" option is misleading. This setting actually tries to convert PDF annotations to Laserfiche annotations.

As a result, in this context "preserve" essentially means "keep them editable" but in my experience many PDF annotations just do not translate very well.

If you just want the annotation to be present and don't need it to remain editable, then you'll have better results if those settings are disabled.

Additionally, due to inconsistencies in how different software generates PDF documents, and the annotations, even if you upgrade to enable these settings, it can still be hit-or-miss.

The more recent "PDF Page Generation" option for the Distributed Computing Cluster is vastly superior and much more reliable than the other available methods.

It does require some additional work to get DCC up and running, and there will be a slight delay involved, but we eliminated 99.9% of our PDF conversion issues by making the switch.

Basically, instead of generating pages when the document is stored using those settings, we trigger a workflow that schedules Page Generation via the DCC server.