Large project, when I drag activities it does not update them!

Large project, when I drag activities it does not update them, it only sends an activity update.

When I do it with a small project activity if it does everything right …

Is there a problem with activity carry-over in gantt 7.0.2?

Hello Dan,
I tried to reproduce that issue in the following snippet, but the project task updates its children:
https://snippet.dhtmlx.com/5/1b8459ceb

Probably, the issue is related to the Gantt configuration, but it is hard to suggest what might be wrong as I don’t see your code.

Please, add your configuration in the following snippet and make sure that the issue is reproduced there:
https://snippet.dhtmlx.com/38ee1b370
Then, click on the Share button and send me the link.
Or send me a ready demo with all the necessary Javascript and CSS files so that I can reproduce the issue locally.