NX 9.0 Lost history

[WildcatHerb]

I have recently noticed an alarming occurrence while working in NX with the history rolled back.
For some unknown reason I have been loosing features further down the tree.
I am not certain what is the cause of this issue. However I have noticed it a couple of times recently.
There are no history filters applied to hide features in the tree.

Has anyone else experienced this issue?
All advice is welcomed & appreciated.

Thanks,

Herb C.

 

[cowski]

What type of edits cause the loss of other features?

I ask because if the "notify on delete" option is turned off and the "delete child features" is turned on and you delete a feature, the child features will be deleted with no notice. The options mentioned can be found on the customer defaults -> Modeling -> general -> delete and suppress tab.

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