I have a part that is a rod with a length and a diameter, both defined as flexible.
I have a couple of family tabled assemblies that use this part, and they both have the flexibility activated for this part.
This is the only part in the assembly, besides a Bulk Item that I need to populate my BOM Table.
The issue is that I will be working along with all going well, and with all instances behaving nicely, and drawings showing correct lengths, when at any given time, the length item becomes locked, and all parts default to the much longer base part length.
I go to Edit Definition of the part, then check the flexibility, and sure enough the length has a big lock just to the right of it, but the diameter is still free.
There is nothing more going on here other than a simple cylindrical shaped part, and to simple family table assys that use it along with bulk items.
I do have a family table of bulk items, and the more complicated of the two assys has a column in the family table controlling which bulk is used with which part.
These parts are all new in my work space, so have not been checked into windchill yet, and they are not marked as read only, so why would the length become locked?
Remember, the diameter dimension always remains free or not locked.