Systems and methods to retain and refeed door curtains are disclosed. A door (10) is disclosed that includes a track (16) and a curtain (14) that includes a leading section (18). The curtain (14) is to be in at least one of a breakaway state or a normal state, and in at least one of a folded condition or an unfolded condition while in the breakaway state such that: (a) in the normal state, a lateral section in an area proximate the leading section (18) is in guiding engagement with the track (16); (b) in the breakaway state while in the folded condition, the lateral section (19) in the area proximate the leading section (18) is dislodged from the track (16) and folded over onto the main section to define an enfolded space; and (c) in the breakaway state while in the unfolded condition, the lateral section (19) in the area proximate the leading section (18) is dislodged from the track (16) but not folded over onto the main section. The example door (10) also includes an unfolder (200) to be in a position to engage the lateral section (19) proximate the enfolded space as the leading section moves toward an open position while the curtain (14) is in the folded condition.