**(Resolved by D12489)** Old comments on the right-hand side port forward to the right-hand side, even if the left-hand side would be more appropriate.
- Create diff 1, leave comments on the right-hand side.
- Create diff 2, leave comments on the right-hand side.
- Create diff 3, leave comments on the right-hand side.
- Diff 2 vs 3.
- Comments on diff 1 are shown on the right, but showing them on the left makes more sense.
- Diff 1 vs 2.
- Comments on diff 3 are shown on the right. This is desirable.
{F377680}
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**(Resolved by D12491)** If a file is shortened (for example, it is mostly deleted), comments do not port forward into it.
- Create diff 1, leave comments on the right-hand side in the middle/bottom of the file.
- Delete almost all of the file.
- Create diff 2.
- View diff 2 vs base.
- Expect to see comments at the end of right-hand side (maybe with annotations).
- Actually see nothing.
{F377707}
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**(Resolved by D12492)** Clicking "Reply" on comments which have been ported forward or backward does not work.
{F377741}
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**(Resolved by D12493)** Comments do not port forward or backward across file moves, but could reasonably be expected to.
- Create diff 1, leave comments on "A".
- Rename "A" to "B".
- Create diff 2.
- View diff 2 vs base.
- Expect to see comments port forward.
- Actually see nothing.
- Add comments to "B".
- View diff 1 vs base.
- Expect to see comments port backward.
- Actually see nothing.
{F377791}
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Ghost inlines do not expand changesets on very large revisions.
- Create diff 1.
- Add inlines.
- Update to diff 2, affecting more than 100 files.
- View diff 2 vs base.
- Expect files with comments from diff 1 to auto-expand.
- Actually, files do not auto-expand.
{F378030}