3.5 queries and workbooks not working after upgrade to BW 7.31

Hi All,

Currently we have upgraded our BW system into 7.31 sp 11.

We have some queries and workbooks in 3.5 version.

When we try to use RRMX in  SAP GUI 720 we get Invalid SAPGUI logon data.

Then we later installed SAP GUI 730.Now when we try RRMX we get connect to gateway failed and also we get 3.5 versions not supported in 730.

We need to run these 3.5 queries and workbooks.Is there a way to run the same.Or migration is the only option.

Can someone help us to resolve this issue.

Regards,

Kumar