Thanks for your tip, but it only works halfway, the number of turns to research my technologies is still not updated in the Trade screen.
And even if the durations were then updated, the user is there to have fun playing the game, not to do a lot of manipulation to make the game work.
Have you ever heard of the concept of "fighting the user interface", if I have to do a whole bunch of manipulation for it to work properly, I'm not fighting other factions, I'm fighting the user interface.
After all these years, the game still seems to be in beta state from the point of view of the realization.