I did that and it only wasted my bitcoins. This feature doesn't work.

Anyway,

After waiting for TOO LONG long, all (yes all) transactions that were problematic are now solved. No pending transactions anymore.

BUT

The problem is even worse: None of transactions got refunded! The destination (receiver - to whom i wanted to pay) bitcoin addresses were changed in the meantime and all my bitcoins are lost. I didn't get any refund. Only balance disappeared.