Mixing SSA and ASS give weird results

[latot]

Hi, i hope this time get a real issue, and not something of my fault..

Well, if i we insert SSA data in ASS or something like that, the code is not transformed correctly, and in the end we will can't see the subs, or part of the subs, or with other colors, etc, here all the code:

ED.ssa

[Script Info]
Title: karaoke
ScriptType: v4.00+
WrapStyle: 0
ScaledBorderAndShadow: yes
PlayResY: 600

[V4+ Styles]
Format: Name, Fontname, Fontsize, PrimaryColour, SecondaryColour, TertiaryColour, BackColour, Bold, Italic, BorderStyle, Outline, Shadow, Alignment, MarginL, MarginR, MarginV, AlphaLevel, Encoding
Style: OK,Britannic Bold,30,16777215,65535,65535,&H0029464b,0,0,1,2,1,2,10,10,10,0,0

[Events]
Format: Layer, Start, End, Style, Name, MarginL, MarginR, MarginV, Effect, Text
Dialogue: 0,0:00:00.00,0:00:05.00,OK,NTP,0000,0000,0000,!Effect,Hi

KED.ass

[Script Info]
; Script generated by Aegisub 3.2.2
; http://www.aegisub.org/
Title: karaoke
ScriptType: v4.00+
WrapStyle: 0
ScaledBorderAndShadow: yes
PlayResY: 600

[V4+ Styles]
Format: Name, Fontname, Fontsize, PrimaryColour, SecondaryColour, OutlineColour, BackColour, Bold, Italic, Underline, StrikeOut, ScaleX, ScaleY, Spacing, Angle, BorderStyle, Outline, Shadow, Alignment, MarginL, MarginR, MarginV, Encoding
Style: KED,Arial,20,&H00FFFFFF,&H000088EF,&H00000000,&H00666666,-1,0,0,0,100,100,0,0,1,3,0,8,10,10,10,1

[Events]
Format: Layer, Start, End, Style, Name, MarginL, MarginR, MarginV, Effect, Text
Dialogue: 0,0:00:00.00,0:00:05.00,KED,,0,0,0,fx,Booo

code:

import pysubs2

def merge(ss):
    s1 = ss[0]
    for i_ in range(1, len(ss)):
        i = ss[i_]
        for j in i:
            s1.insert(0, j)
        s1.import_styles(i)
    return s1

a=pysubs2.load("ED.ssa")
b=pysubs2.load("KED.ass")

a=merge([a, b])
a.save("t1.ssa")
a.save("t2.ass")

This is exactly what i run, and if you play any of the two files you will find the subs are not right.

In the t1 case the colors are wrong, in the second case only is displayed KED.ass file.

Bye.