Layout (under model view) in sematic model not showing up when switching semantic model in report

[TalkingBits]

I have a report r with a semantic model s1. I have another semantic model s2 which is quite large and has many layout tabs under model view. When I switch semantic model in r from s1 to s2, the layouts does not follow. Can anyone explain how I can make the layouts follow into the new report?

This is where the problem occur:

1. I create a quite large semantic model. With it I also create many layouts under model view as to improve overview. 

2. When I want to use the semantic model in many different, already existing reports, by swapping the semantic model, the layouts are not following into the new reports. 

It seems as if the layouts are a property of the report rather than the semantic model. Which I find contradicting since the layouts where created in the semantic model. It alsow seems as if semantic models share a lot of characteristics with the report. 

If I create a new report off the semantic model, then the layouts follow. 

[lbendlin]

Please provide a more detailed explanation of what you are aiming to achieve. What have you tried and where are you stuck?  Are you trying to understand how the modeling tabs work?

[TalkingBits]

I have updated the question. Hopefully it is more clear now. 

[lbendlin]

It seems as if the layouts are a property of the report rather than the semantic model. Which I find contradicting since the layouts where created in the semantic model. It alsow seems as if semantic models share a lot of characteristics with the report. 

Models and UI (what we call reports) are entirely separate entities, just awkwardly packaged together in a PBIX file. In the Power BI Service they are clearly separated.  Well, mostly clearly. There are still some awkward overlaps there too.

If I create a new report off the semantic model, then the layouts follow. 

No, not in a deterministic way.  The model layout will render randomly each time.

[TalkingBits]

Ok, thank you for clarifying. 

When I refer to 'layout', I refer to the tabs in the model view not the positioning of the tables etc.. If thats what you meant? 

Let's say I have created tab 'New layout' in the semantic model, then that at least follow into a new report, if it's created off the semantic model (se attached image). 

It does not follow if I swap to the semantic model in an already existing report.

[lbendlin]

Yes, we are talking about the same thing. That feature has always been a poorly designed afterthought, frail and prone to breaking. Try moving tables around and you will see joins going missing, or being rerendered in a silly and non-sensical way. Wait until you have more than a couple dozen tables...

Feel free to raise it as an issue.