How to skip only some characters while loading master data in to BPC NetWeaver

Hi Experts,

I need to load data from flat file for Account dimension, but here in flat file there are some texts are there in starting which i need to remove for example ..

IN Flat file value is in below given format ..

So whiling loading data i need to remove this Abcd the first 4 characters from each row if Abcdexist.

As i know in optionSKIPIF we can use but on that case it is skipping all values including Abcd for that particular  row.

and in my case i need to only skip first four characters on each row if Abcd is exist on that row .

Note:- I do not want to do manually every time that is why asking that any way to make this automated by skip in OPTION while loading flat file data in to BPC ?

Thanks,

Ravi