I agree with @AlexanderVolok, it looks like the package has a LocalID different than English, or the Date time culture info selected in the Operating System Regional Settings are different.
(1) Changing months name using conditional ? :
If you can change these property then it may solves the issue, else you add an Expression Task before the Data Flow Task which convert the date to a string with different format using a conditional operator ? :
, as example (Assuming that you are handling polish months names):
@[User::NewDataString] =
LEFT((DT_WSTR,50)@[User::ToDate],2) + "-" +
(SUBSTRING((DT_WSTR,50)@[User::ToDate], FINDSTRING((DT_WSTR,50)@[User::ToDate],"-",1) + 1, FINDSTRING((DT_WSTR,50)@[User::ToDate],"-",2) - FINDSTRING((DT_WSTR,50)@[User::ToDate],"-",1) - 1) == "maj" ? "may" :
SUBSTRING((DT_WSTR,50)@[User::ToDate], FINDSTRING((DT_WSTR,50)@[User::ToDate],"-",1) + 1, FINDSTRING((DT_WSTR,50)@[User::ToDate],"-",2) - FINDSTRING((DT_WSTR,50)@[User::ToDate],"-",1) - 1) == "stycz" ? "Jan" :
SUBSTRING((DT_WSTR,50)@[User::ToDate], FINDSTRING((DT_WSTR,50)@[User::ToDate],"-",1) + 1, FINDSTRING((DT_WSTR,50)@[User::ToDate],"-",2) - FINDSTRING((DT_WSTR,50)@[User::ToDate],"-",1) - 1) == "lut" ? "feb" :
SUBSTRING((DT_WSTR,50)@[User::ToDate], FINDSTRING((DT_WSTR,50)@[User::ToDate],"-",1) + 1, FINDSTRING((DT_WSTR,50)@[User::ToDate],"-",2) - FINDSTRING((DT_WSTR,50)@[User::ToDate],"-",1) - 1) == "mar" ? "mar" :
SUBSTRING((DT_WSTR,50)@[User::ToDate], FINDSTRING((DT_WSTR,50)@[User::ToDate],"-",1) + 1, FINDSTRING((DT_WSTR,50)@[User::ToDate],"-",2) - FINDSTRING((DT_WSTR,50)@[User::ToDate],"-",1) - 1) == "maj" ? "may" :
SUBSTRING((DT_WSTR,50)@[User::ToDate], FINDSTRING((DT_WSTR,50)@[User::ToDate],"-",1) + 1, FINDSTRING((DT_WSTR,50)@[User::ToDate],"-",2) - FINDSTRING((DT_WSTR,50)@[User::ToDate],"-",1) - 1) == "czerw" ? "jun" :
SUBSTRING((DT_WSTR,50)@[User::ToDate], FINDSTRING((DT_WSTR,50)@[User::ToDate],"-",1) + 1, FINDSTRING((DT_WSTR,50)@[User::ToDate],"-",2) - FINDSTRING((DT_WSTR,50)@[User::ToDate],"-",1) - 1) == "lip" ? "jul" :
SUBSTRING((DT_WSTR,50)@[User::ToDate], FINDSTRING((DT_WSTR,50)@[User::ToDate],"-",1) + 1, FINDSTRING((DT_WSTR,50)@[User::ToDate],"-",2) - FINDSTRING((DT_WSTR,50)@[User::ToDate],"-",1) - 1) == "sierp" ? "aug" :
SUBSTRING((DT_WSTR,50)@[User::ToDate], FINDSTRING((DT_WSTR,50)@[User::ToDate],"-",1) + 1, FINDSTRING((DT_WSTR,50)@[User::ToDate],"-",2) - FINDSTRING((DT_WSTR,50)@[User::ToDate],"-",1) - 1) == "wrzes" ? "sep" :
SUBSTRING((DT_WSTR,50)@[User::ToDate], FINDSTRING((DT_WSTR,50)@[User::ToDate],"-",1) + 1, FINDSTRING((DT_WSTR,50)@[User::ToDate],"-",2) - FINDSTRING((DT_WSTR,50)@[User::ToDate],"-",1) - 1) == "pazdzier" ? "oct" :
SUBSTRING((DT_WSTR,50)@[User::ToDate], FINDSTRING((DT_WSTR,50)@[User::ToDate],"-",1) + 1, FINDSTRING((DT_WSTR,50)@[User::ToDate],"-",2) - FINDSTRING((DT_WSTR,50)@[User::ToDate],"-",1) - 1) == "listopad" ? "nov" : "dec" )
+ "-" + RIGHT((DT_WSTR,50)@[User::ToDate],4)
Then you should pass the new variable as parameter.
(2) Changing data format to yyyy-MM-dd
You can also use the an Expression Task, to convert months to numeric value such as:
@[User::NewDateString] =
RIGHT((DT_WSTR,50)@[User::ToDate],4) + "-" +
RIGHT("0" + (DT_WSTR,50)DATEPART("mm", @[User::ToDate]),2) + "-" +
LEFT((DT_WSTR,50)@[User::ToDate],2)
References