Append Sheet Numbers to Local Nets

Under Project Options > Options Tab

You will find a option to 'Append Sheet Numbers to Local Nets'

Here is the Nets in the schematic on Sheet 3.

Here is the Nets in the PCB with sheet 3 appended.

Note that the sheet number has been appended to the Net names.

Interesting Twist:

According to Altium

"Append Sheet Numbers to Local Net - Enable this option to add the Sheet Number value (this SheetNumber parameter defined for this sheet is in the Document Options dialog) to local nets. A local net is a net that does not leave this sheet and if the net does leave the sheet then it does not get the SheetNumber appended."

Source: Project Options - Altium TechDocs 

However if a bus is created on the local sheet, then the sheet number is not appended.

I'm not clear on what value appending sheet numbers to my PCB nets has. I'm just documenting the anomaly that happens when a bus is added to the local sheet.

That's It.