I am sorry to make it prolonged because my English is poor.

I couldn't write it well though I wanted to write it more briefly.

I was afraid that this action might be a cause because it was only the change of the title by post-editing that I carried out before a link died.

A problem didn't happen though I changed the title of another item now.
The cause is something other. 
I am sorry to ask it a question for long.

I will report that without deleting an item if I meet with the problem again.

Thank you.
JTrout