Missing some features when use the Flex tool

Hi,

I am trying to use Flex tool in SW to bend my model. However,  after using the Flex, the model loses some of its features.

I have tried to modify the missing feature's sketch and its connections to other features, but it still does not work.

I have attached the photo showing the problem, any advice on that?

Thanks in advance for your help.

Hamid

SysteMED Pte Ltd

SolidworksParts And Features