svnadmin加载错误->再次加载第一个修订

我在Ubuntu 12.04上运行svn服务器，并通过以下方式进行svn备份：

svnadmin dump ./backup/repo > repo.dump

现在，我尝试恢复它，并通过以下方式进行了新的回购：

svnadmin create repo
svnadmin load ./repo < ./backup/repo.dump

但在第83版之后，它变得很奇怪，我得到了以下错误：

<<< Started new transaction, based on original revision 83
     * editing path : test/file1.WBG ... done.
     * editing path : test/file2.WBG ... done.

------- Committed revision 83 >>>

<<< Started new transaction, based on original revision 1
     * adding path : pic2.png ... done.

------- Committed new rev 84 (loaded from original rev 1) >>>

<<< Started new transaction, based on original revision 2
     * adding path : pic.png ... done.

------- Committed new rev 85 (loaded from original rev 2) >>>

<<< Started new transaction, based on original revision 3
     * deleting path : pic.png ... done.
     * deleting path : pic2.png ... done.

------ Committed new rev 86 (loaded from original rev 3) >>>

 <<< Started new transaction, based on original revision 4
 svnadmin: File already exists: filesystem 'repo/db', transaction '86-2e', path 'api'
     * adding path : api ...

然后停止，但整个存储库有90个修订

我真的不明白为什么它会在83年后的第一次修订中加载

我希望有人能帮忙。 谢谢