Developers behind the 2010 plans for Peelhouses lodged a request with Dumfries and Galloway Council last Friday.
Edinburgh based consultants Wyg, acting for Blackmores, are seeking a time extension for the scheme at the former farm besides the B723 road to Boreland.
The current planning permission for the 250 acre site, which was given in 2010 and extended in 2013, runs out later this year.
And the latest bid reveals Blackmores are still interested in progressing a 250,000 square metre internet data centre set in a technology park and business centre, along with a horticultural resarch and commercial centre.
Plans for a £800m data farm at Peelhouses were first unveiled in 2007 by Internet Villages International Ltd, promising the creation of up to 1000 jobs.
They also hoped to include a raft of new housing, but that element was later dropped and there is no mention of houses in the latest application.
