I found a work around of this boots problem . When I load the pose, I must set the shin bending zu 0. Then I select the boots-shin part and bend this instead of the figure shin. So I can bend the shin back to the position I want without the boot get demaged again. But if you select the shin part of the boot, I must use the bend circles with the mouse to bend. If I use the bend parameters only the boot bends without the shin of the figure.(It's possible that you must use this workaround for other parts of the boot also if the boot does not fit the feet correctly)

Tthe solution of the issue with the toes part of the boots. Is the toes part of the boot bended to much I can correct this with changing the parameters of the toes part of the boot. So I can bring them into the right pose fitted to the toes.

some of this issues are only if I load poses, not if I bend the poses manualy.. it's strange. Does anybody else has this issue with loaded poses with the boots? is there a better solution or workaround?