Please post a Bug Report about this.

Please note that if you wish to name nets with connection symbols, it is better to use the net flags or net port symbols from the `Writing Tools` palette. These apply names to the whole of the net to which they are attached and so can be used to connect nets both within a schematic sheet and between sheets of a multi-sheet schematic. (They also appear correctly when printing!)

Hi After testing, it is work by side. which editor version are you using?

Hi andyfierman, thank you for your reply. The symbol I am using is the "Arrow Head" from the drawing palette, it should not disappear when I export the drawing, but it does, it looks like a random issue. The online version is 5.1.3 itAlex

* What browser are you using? `The symbol I am using is the "Arrow Head" from the drawing palette, it should not disappear when I export the drawing, but it does...` That is why I suggested that you post a bug report.