Description:
Multiple series stock charts are not saving customised series line formatting details like colour and line weight.

Steps to Reproduce:
1. Create a stock chart with 3 series.
2. Format the line colour and weight of all three series.
3. Save the document and close it.


Actual Results:
On re-opening the document the last two series have forgotten the line formatting.

Expected Results:
Remembered the saved series line formatting.


Reproducible: Always


User Profile Reset: Yes


OpenGL enabled: Yes

Additional Info:
Version: 6.3.3.2 (x64)
Build ID: a64200df03143b798afd1ec74a12ab50359878ed
CPU threads: 8; OS: Windows 10.0; UI render: default; VCL: win; 
Locale: en-AU (en_AU); UI-Language: en-GB
Calc: threaded