No. This uplift phenomenon occurs with pervious formwork surfaces such as plywood or fibre-cement sheets. Since cement slurry does not bond due to water absorption to the polymer surface of DCS forms, the formwork uplift which is normally experienced with common formworking systems does not occur with the DCS wall systems.
In addition, the round, horizontally aligned web holes of the vertically placed DCS modules prevent the free fall of coarse aggregate, hence eliminating concrete segregation. The same phenomenon, commonly called elephant-trunk action, pushes the forms down against the potential uplift caused by the wet concrete mix.
For the above reasons no physical connection is required between the bottom tracks and the wall forms. However, in order to prevent the forms from being displaced by wind or accidental disturbance by impact, it is recommended that the forms should be connected to the bottom guide tracks by gluing and/or screwing if they are to be left overnight prior to concrete pouring.