"It was about a wedding date," an ABC spokesperson told Reality TV World on Tuesday.
"They were worried about how the announcement would have affected their personal life, so they decided to pull it."
Last month, ABC had announced that Harris and Swiderski would visit Pavelka during the party and offer their thoughts on the women before he eliminated his first 10 suitors during The Bachelor's fourteenth-season premiere.
In addition, the network had also teased that Harris and Swiderski would "share a special announcement" with Pavelka after helping him make his elimination decisions.
The Bachelor's debut was filmed in October and included Harris and Swiderski sharing their wedding date with Pavelka, however the couple subsequently had "second thoughts" about the public announcement after ABC teased it last month, according to the network spokesperson.
The decision to remove the announcement from the premiere broadcast was made after Harris and Swiderski discussed their concerns with The Bachelor producers, the spokesperson told Reality TV World.