@negusoi
Hi! Thank you for writing on the forums.
The Link ID: field can be used to add an html id to the link.
Then, in turn, the html id could be used for various things, like it can be referenced in the querystring, or CSS can use it to style the html, or JavaScript can perform operations on it, etc…
For example it might end up looking like this:
<a id="mj-boston-skyline-link-id" class=...
Hm, I don’t know why putting a value in that field would cause a problem though — I wouldn’t expect the text or link to disappear! Maybe something else is causing that?…
Here’s a link to a screenshot showing where the id shows up in the html code:

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This reply was modified 8 years, 2 months ago by
mjassen (mjjojo). Reason: fixed img into link and added greeting
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This reply was modified 8 years, 2 months ago by
mjassen (mjjojo). Reason: edit link img
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This reply was modified 8 years, 2 months ago by
mjassen (mjjojo). Reason: testing img link
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This reply was modified 8 years, 2 months ago by
mjassen (mjjojo). Reason: revert test