How to connect disconnect pages in FM12?

A minor correction to Error's info on connecting the text frames. You only have to ctrl-click on the second text frame before using the Connect Text Frames option. FM will drop the handles on the previous text frame when you do this, but it still remembers the selection order.

Also, before you connect the text frames, check the Object properties of the text frame on the disconnected page(s). The flow name has to be the same as the one that you are connecting to and you have to turn on the Autoconnect feature.

You also have to keep in mind that the pages following the disconnected ones may be either connected to the first one that you are connecting to or may be completely disconnected from the previous ones depending upon how the disconnect was done in the first place.

If you don't have a lot of content (i.e. many disconnected pages) to deal with, it might just be easier to copy/cut the content on the disconnected page(s), paste it into the main flow at the desired location and then delete the disconnected page(s)