Facing Strange Problem ....Custom BootAnimation Help Please!!..

Anyone help me please...

I created a boot animation ... I replaced in system/media but it's not getting changed.. And I was shocked when i saw the backup bootanimation. The thing is I updated to lollipop and got new boot animation(sewing) , but when i opened the zip file it still containing old logo(globe).. Im confused a lot.. where would be the new boot animation location ??:crying:

Please somebody help me to change it to my custom animation..

TIA