Provider not saved if "Submit all" checkbox selected

Problem/Motivation

When multiple languages are selected for translation and editor wants to save (not submit) jobs then only the first item gets provider saved, even "Submit all N translation jobs with the same settings". Others are without a provider.

Steps to reproduce

Select multiple languages for translation - https://monosnap.com/file/KANXicjbnLmnrZTtfOzxMuMcKJhQ0s
Select Provider, Due date, Submit all N translation jobs with the same settings checkbox and hit Save Job - https://monosnap.com/file/XgVyi0WGVWztIuGQhmfQGd0wCXFkZc
On Job list second item Provider hasn't provided - https://monosnap.com/file/IzupTPmKaVJ1U3XqO9qElJ19rKWRck

Proposed resolution

When saving jobs, I expect that the provider (and due date) is set for all items (if Submit all [..] checkbox is selected), so afterward can do custom features (e.g. sending jobs once per day at one exact time in my case) without wondering if translator provider is provided.

Remaining tasks

Review process when and what is saved and when submitted. When the checkbox is selected and Jobs just saved, it's misleading that those data aren't saved for all items. Yes, by reading between the lines You might get that it won't get saved..

User interface changes

API changes

Data model changes