Assertions not saved in Ready API 3.9.0

Hello @cadesnoy65

That is a painful issue...  I might have encountered that a very long time ago, but don't have a direct solution for you since it has not happened to me lately. 

The first thing I would do is see if ReadyAPI is letting you know there is an issue by looking at the ReadyAPI Log (lower left corner of ReadyAPI | Show Logs).  Click on the "ReadyAPI Log" tab and right click anywhere in the log text area and select the "Clear all logs" menu item.  Once you have a clear viewing area it will make it easier to see what ReadyAPI does when it saves your project.  Now that the area is clear, make your assertion change and watch the ReadyAPI Log viewing area when you save your project.  Scroll through the viewing area after you save and see if there are any warning or error messages in the log that you might be able to address.

Since you say this problem does not happen all the time, you may need to view the log each time you save to see if anything strange is noted in the log.  Without log information, everyone answering your question will just be guessing on what the solution might be.

Regards,

Todd