As mentioned in the title,
I saved the project with the speech metadata. After exit and reopening of the file,
it all disappeared no matter how many times I clicked on the "Analysis Text" tab under the "Metadata" table.
Please show a screenshot of your Project panel and Metadata panel indicating what you have selected and where you're looking. You need to have the clip selected in the Project panel to see its metadata in the Metadata panel.
Please take a look. I've already clicked on the clip on the control panel and clicked several times the Analysis Text tab.
Retrieving data ...