not able to change the backup location for maintenance plan

Hi All,

We have a FULL backup maintenance plan which is SSIS package,

we need to modify the location of the backup from D:\sqlbackups to E:\sqlbackups.

to change i went to BIDS, opened a new project sSIS then right click on the SSIS package on solution bar and selected Update Exiting package.
i double clicked on the fullbackup package and changed the path to E:\sqlbackups and saved it using CTR+S,
but when i close and reopen the package it still shows the backup up path as D:\sqlbackups isntead of E:\sqlbackups
please let me know the steps to modify the path for ssis package

Thanks
Kushal