Customer - spl gl indicators

Hi,

I have a requirement as below. One of my client is using different special gl indicators for different purpose.

spl gl indicator D -tution fee - Account no:123456

spl gl indicator I - residence -account no:234569

Now he wants to use a single gl account for the above two indicators(D & I).

Proposed plan.

D-tution fee - Account no:333333 (old gl a/c 123456)

I - residence -account no:333333 (old gl a/c 234569)

Can you please let me know, what are the complications we may face if we change from gl account to another GL account.

Also let me know, any other points to be taken care while doing this process in T.Code: OBYR

Thanks in advance.

Regards,

Prasad.