Data on a dialog does not match what is seen on a project page. For example, the device tag is missing on the Device Properties dialog but can be seen on the page.
In some cases, the data can be seen disappearing from the dialog soon after it is opened.
In one case the problem was first discovered when quantities were low on a bill of materials report. Related devices had missing device tags and terminal numbers on Device Properties.
Run Update Page on the problem page(s).
If the problem occurred after copying and pasting the affected items onto the page, check the source material. Could try deleting the pasted items and trying again.
Keywords: drawing, disappear