If I understood your question correctly, layers may be the problem. Basically....
To switch from one text frame to another on the same layer, simply click on the text frame you want to select.
To edit text in a different text frame on the same layer, double click inside that text frame to switch to "Edit mode."
To switch from one frame to another on a different layer, open the Layers palette, select the layer that the second frame is on, then click on the frame.
To edit text in a different text frame on a different layer, open the Layers palette, select the layer that the second frame is on, then double click on the frame.
Sorry if I misunderstood your problem....
HTH,
Christen