###

This was found by Dominic (live during a meeting :D)

### Steps to reproduce

1. Login as a user with all WP and meetings permissions

2. Go to any WP

3. Go to Meetings tab

4. Click 'Add to meeting'

5. Select a meeting series occurrence

6. In the section drop down, select 'Series backlog'

7. Save


### What is the buggy behaviour?

* User sees 'Section does not belong to the same meeting' error


### What is the expected behaviour?

1. Begin of the deletion Do not show series backlog as a section

or

2. End of the deletion Let users add to backlog without error


###

### Screenshots and other files

<img class="op-uc-image op-uc-image_inline" src="/api/v3/attachments/919788/content">

### Environment information

**OpenProject version**

Core build

[697b69724364d20608e1d23f7885014de6af6793](https://qa.openproject-edge.com/external_redirect?url=https%3A%2F%2Fgithub.com%2Fopf%2Fopenproject%2Fcommit%2F697b69724364d20608e1d23f7885014de6af6793)

Product version

[ba2a367e1c149400b6470882a03f621b5e1491e2](https://qa.openproject-edge.com/external_redirect?url=https%3A%2F%2Fgithub.com%2Fopf%2Fsaas-openproject%2Fcommit%2Fba2a367e1c149400b6470882a03f621b5e1491e2)

Core version

OpenProject 17.3.0

**Browser**

* [ ] Chrome
* [x] Firefox
* [ ] Safari
* [ ] Mobile Safari
* [ ] Other (please specify)

**Operating System**

* [x] Windows
* [ ] Mac OS X
* [ ] Mobile iOS
* [ ] Mobile Android
* [ ] Linux (please specify distro)
* [ ] Chrome OS
* [ ] Other (please specify)