SysMLv1: MagicDraw/Cameo: Oh no, I lost my part or reference property? Where did it go? The Symbol Properties option for 'Show Association ends as Attributes' may help you find it!

Icon class
icon_class
far fa-sticky-note
icon_class_computed
far fa-sticky-note
Note kind
MODELLING
TIP
Policy level
INFORMATIVE
Specification keywords
SysML-1.6
SysML-1.7
UML keywords
Association
Association::memberEnd
Property::owningAssociation
Association::ownedEnd
SysMLv1.x keywords
part property
MD:PartProperty
reference property
MD:ReferenceProperty
Keywords
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Dr Darren says:
If only I had a dollar for every time I've encountered this one ...

It is recommended that every new MagicDraw/Cameo SysML user explore the 'Show Association ends as Attributes' option under the Symbol Properties for Block symbols. The image above shows some cases.

The usual mode is 'Without Association Symbol', although you can use 'All' to show a Property always, even when it is also show as the 'memberEnd' of an Association. The mode 'None' is useful sometimes, but can also seem to make Properties simply "vanish"! As always you can check in the model browser too.

Make sure you have the symbol options display level set to 'All' (not even 'Expert' is enough) then leave it that way forever!
Webel: MagicDraw/Cameo: Set EVERY element properties & symbol properties filter to 'All' (yes, not just 'Expert', to 'All', even if you are a "novice" on your first project) in EVERY dialog and every project option setting. Use the search filters!

For a full explanation visit also:

MagicDraw/Cameo: If you want to show a Property or Port listed both in its corresponding compartment on a Class or Block symbol and as the end of an Association in the same diagram, set the display option Show Association Ends As Attributes/Ports to 'all'
SysMLv1: A part Property or reference Property is not necessarily a 'memberEnd' or 'ownedEnd' of an Association ('association' or 'owningAssociation'). But an Association always as at least 2 'memberEnd' Properties. (With some MagicDraw/Cameo tool tips.)

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Relates to
Association and Property - some cases
Related notes
[ASSERTION, DISPLAY, SETTINGS, STYLE, TOOL]{STRICT} ALL Model-Based Engineering: Just because you can't see a Feature or some other aspect of a SysML (or UML) Element in a tool on a symbol does NOT mean it does not exist in the underlying model (repository)! The model is not just what is DISPLAYED!
[DISPLAY, FEATURE, TOOL]{INFORMATIVE} MagicDraw/Cameo: If you want to show a Property or Port listed both in its corresponding compartment on a Class or Block symbol and as the end of an Association in the same diagram, set the display option Show Association Ends As Attributes/Ports to 'all'
[MODELLING, TIP]{INFORMATIVE} SysMLv1: A part Property or reference Property is not necessarily a 'memberEnd' or 'ownedEnd' of an Association ('association' or 'owningAssociation'). But an Association always as at least 2 'memberEnd' Properties. (With some MagicDraw/Cameo tool tips.)
Related notes (backlinks)
Related snippets (extracts)
Visit also
Section: SysML-1.6 specification diagrams: 08 Blocks
SysML Part Property representations
SysML Reference Property representations
REFERENCE CARD: Types of Block Properties and Block compartments
REFERENCE CARD: Property cheat-sheet for Block
Visit also (backlinks)