Irricad

I have what looks like a resolution conflict when printing drip lines. Not all lines get printed in a PDF document. It is random as to areas depending how much I zoom in or out.

Are you printing to a PDF printer or Exporting to PDF?
If printing, for most PDF issues the solution is often to print to a different PDF printer.
If exporting, try a different DPI setting.

Additionally, if you have different line types in your Pipes or Wires database component group, you have the option to turn these off Settings|Drawing Items if this assists to solve the issue.

The IRRICAD Team