You changed your file like this:
<key>S_Credit_Amount_Will_Expire_ORIGINAL</key>
<dict>
<key>NSStringLocalizedFormatKey</key>
<string>%#@creditamount@</string>
<key>creditamount</key>
<dict>
<key>NSStringFormatSpecTypeKey</key>
<string>NSStringPluralRuleType</string>
<key>NSStringFormatValueTypeKey</key>
<string>p</string>
<key>other</key>
<string>%1$@ will expire in %2$#@days@</string>
</dict>
<key>days</key>
<dict>
<key>NSStringFormatSpecTypeKey</key>
<string>NSStringPluralRuleType</string>
<key>NSStringFormatValueTypeKey</key>
<string>ld</string>
<key>one</key>
<string>%2$ld day</string>
<key>other</key>
<string>%2$ld days</string>
</dict>
</dict>
What I don't understand is why didn't you change it like this instead?
<key>S_Credit_Amount_Will_Expire_ORIGINAL</key>
<dict>
<key>NSStringLocalizedFormatKey</key>
<string>%#@creditamount@</string>
<key>creditamount</key>
<dict>
<key>NSStringFormatSpecTypeKey</key>
<string>NSStringPluralRuleType</string>
<key>NSStringFormatValueTypeKey</key>
<string>ld</string>
<key>one</key>
<string>%1$@ will expire in %2$ld day</string>
<key>other</key>
<string>%1$@ will expire in %2$ld days</string>
</dict>
</dict>