According to Jim (2001)

S04E16 The Wedding Dress

Cheryl generously lends her wedding dress to Dana, unaware of its tumultuous past. Meanwhile, Jim and Andy scramble to hide the truth that the gown was lost in a blaze during a wild sports event years prior. As they attempt to maintain the facade, tensions rise, leading to a series of comedic mishaps as they navigate the delicate situation without revealing the dress's fate.