Better changelog and upgrade note for #17875 [skip ci]

framework/CHANGELOG.md

@@ -11,7 +11,7 @@ Yii Framework 2 Change Log
 - Bug #17829: `yii\helpers\ArrayHelper::filter` now correctly filters data when passing a filter with more than 2 levels (rhertogh)
 - Enh #7622: Allow `yii\data\ArrayDataProvider` to control the sort flags for `sortModels` through `yii\data\Sort::sortFlags` property (askobara)
 - Bug #17863: `\yii\helpers\BaseInflector::slug()` doesn't work with an empty string as a replacement argument (haruatari)
-- Bug #17875: Revert `move_uploaded_file()` function instead of `copy()` and `unlink()` for saving uploaded files when POST request (sup-ham)
+- Bug #17875: Use `move_uploaded_file()` function instead of `copy()` and `unlink()` for saving uploaded files in case of POST request (sup-ham)
 
 
 2.0.32 January 21, 2020

framework/UPGRADE.md

@@ -99,6 +99,8 @@ Upgrade from Yii 2.0.32
   
   Note: If you are only using up to 2 "levels" (e.g. `ArrayHelper::filter($myArray, ['A.B']`), this change has no impact.
   
+* `UploadedFile` class `deleteTempFile()` and `isUploadedFile()` methods introduced in 2.0.32 were removed.
+
 Upgrade from Yii 2.0.31
 -----------------------