ID 266300 - Exporting multiple shots to the same comp doesn't use the custom start frame

Problem summary
Exporting multiple shots to the same comp doesn't use the custom start frame

Customer reported version
nuke.10.5v1

Customer reported platform

Steps to reproduce

1) Open NukeStudio

2) Import multiple files and add them to a sequence

3) Select all the track items in the timeline and Right click>Effects>Create Comp Special...

4) Set the project directory to a local drive

5) Process the shots as a Basic Nuke Shot, and change the Start Frame to custom, with a value of 1001

6) Create Comp, and Add a single comp across all shots

7) Open the Nuke script, it will have a start frame of 1, and not 1001

Reproduced by support
This problem has been reproduced on:
Nuke 10.5v2 - Windows 10 - CentOS 7 - MacOSX 10.12
Nuke 10.5v1 - Windows 10
Nuke 10.0v5 - Windows 10
Nuke 10.0v1 - Windows 10
Nuke 9.0v9 - Windows 10
Nuke 9.0v1 - Windows 10 - CentOS 7 - MacOSX 10.12

Expected behaviour
For the exported comp to have the correct start frame

Actual behaviour
It had the default one, not the one defined in the export settings