Problem: This one is crazy. If you hide a connector by first pressing delete and then choosing to hide, there is no way to show it again on that particular diagram.
Suggestion: Regardless of how you Hide a connector, you should be able to Show it again, using either the "Insert Related Items" dialog or the "Links" dialog. This should be an easy fix: Just point to the same internal API that toggles Hide/Show in the Links pane.
Refer to the EA User Guide:
http://sparxsystems.com/enterprise_architect_user_guide/13.0/modeling_tools/hideshowconnectors.htmlSteps:
1. On any diagram draw a connector between any two elements.
2. Press Del key. System prompts to either delete the connector or hide it.
3. Choose to Hide it, and click OK.
Attempted Workarounds:
1. Right-click on either element, "Insert Related Items". Locate and check the connector you just hid, and click OK.
EA will not show the connector.
2. Open the Properties dialog for one of the elements. In the left pane, select "Links" under "Related". Right click on the connector. It does not provide a "Show" option.
There is no way to instruct EA to show the connector.
** Current Constraint/Recommendation until this is fixed **
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NEVER use the Del key to hide a connector. Always use the Links method.