Consider the last Enterprise episode, which is an attempt to show that Enterprise is in the main timeline. Riker, after talking with Enterprise crew on the holodeck, decides to reveal the cloaking device conspiracy (from the TNG episode "The Pegasus"). But in that TNG episode, he doesn't reveal the device before he visits the Pegasus. He doesn't reveal the conspiracy until he is forced to by the Romulans. Unlike in the original timeline, the history of the NX-01 crew convinces Riker to go ahead and reveal the plot instead of wavering until his hand is forced.