How to get rid of ship designs?

[Ward]

Problem number one
Reappearing Designs

I finished a huge game and saved the empire (I wanted to know if racial experience points have any impact on game) with designs. Then I started a new game, deleted(made obsolete) the Hi-tech designs and set new ones(Appropriate to current tech level). Then the problem occured. On next turn the Hi-tech designs appeared again. I can't get rid of them - they appear again at the beginning of each turn, no matter what I do - and take up space in designs window.
Unfortunately the only slots I used to save the game were autosaves(It was simultaneous game) so I can't load a previously saved game to save the empire again(This time without designs).
I browsed many FAQ topics but didn't find any answers.

Problem number two
No victory

In the same game I finished with fulfilling victory condition(Score 5x bigger than 2nd player). The game announced that this is going to be the Last turn. I ended the "Last turn" but the game announced me the victory mesage again. Is this normal in Simultaneous games or is it a bug? I remember that in turn-based the game had quit correctly.

Can anybody help me, please?