So at the end- after BR7 I inventory is gone. I dropped BR7 from B fare to W and changed return BR8 to B. Checked UA I inventory, cleared with I, but actual ticket will show Z.

attaching my final ticket (this ticket was sponsored by Taiwanese government for personal visit). I paid for making the extra change.

i will also attached my conversation with appointed agent.

I know there are several travel website who will keep on pitching Z availability guarantee SAUA. In reality it’s total BS. I is the safest and only guarantee way you will get SAUA.

Each time you change a ticket, it’s $100 change fee. To be safe. Make sure I exist.