This is an old revision of the document!
After some migrations of the (very) old ispcp 1.0.7 to new servers before upgrading to i-mscp 1.2.15 I have a little “how to” for this.
You should do this ONLY if you cannot update your old debian (4-6) any more! So this is more a workaround and may be adopted for i-mscp as well!