Q Light Controller+

Hello
I've made a show a few weeks ago.
I have something like 20 lines in it and it's duration is 20 minutes.
It was working fine Sereval times when I was testing and coding it.
I need to use this show next night. I wanted to test it tonight but I have a big problem.
Some of the scenes included on the show have been automaticaly changed in sequences by QLC. It wasn't a problem up to tonight. These sequences are now empty. Moreover some of the scenes replaced by sequences are set to 0 for all the channels that are used in these scenes. Hopefully I always make a copy scenes with the same values.
I need to precise that I've changed my computer between the encoding and now.
I need to understand why QLC changed these scenes in sequences and why they are now empty so that I can get a proper show again.
I can't encode again this show. It's outdoor work. It's in 20 hours and I have only 1 hour of night before the show starts.
I need help urgently.
Thanks for your help

It's ok for today. I've filled the empty sequences with the copy of the copy (I know I'm paranoid) of my different scenes. Hopefully durations are indicated on each sequence.
But I still don't understand what happened. Why these sequences were created and why they are empty? And why it affects the scenes?
If you're able to explain it to me I would be glad.
Thanks again for making QLC exists!

Please explain your setup, which OS are you using. Share your workspace. If you need help urgently we need more info to try to help you. Have you read the QLC+ documentation?.

Thanks for your answer.
As said in the post above I manage with the urgent part by filling all the empty sequences with scenes.
I've read all the informations about shows on QLC. I learn to use this software alone with help from friends from time to time. Without this notice I wouldn't do anything.
I've changed my computer but I can't check the QLC version on the old computer... In both computer I use windows 7. I've encoded the show with QLC+ 4 something on the previous computer and now I use QLC+4.11.2 on the new computer. I have Several QLC files that I transfer in this computer from the older. It is the only one with a "show manager" encoded. I usually use sequences in the virtual console with chasers in it.
So to resume :
I've created a show. When I used scenes, they were automaticaly changed in sequences. My question is why? I didn't find nothing about this in the "show manager" help section.
I wanted to use this file on my new computer. All the sequences where empty. Compatibility problems?
Some of the scenes I used were changed with level 0 on all channels selected in this scene. Does it mean a sequence is able to change the values of a scene? I thought the scene was changed in the sequence but not the proper scene itself. I'm I wrong?
This problem makes me feel I don't fulky understand this "show manager".
Thanks for help. Tell me if you need something more.

With the switch to version 4.11.0 there was an internal change regarding sequences. You can find information on that here.

Thanks for the link. Very helpful.
Finally I think I did well ☺
But I will change the way I use scenes and sequences in my next protect...