I just spent an hour getting textures into place. And when I reopened the level, I found that they moved again. I locked the textures after setting them, why are they moving?

What do you mean like animation---wiggling-----sliding??

Here is what happened, I had a road and side walk aligned perfectly on their respective blocks, scaled properly, and every thing and to keep them from moving if I accedently moved the block, I locked the textures.

Then I closed Gamestudio for a while and did something else.

When I came back to the project, the textures were no longer aligned.

same here