then select Track with TR1V1 (it shows a square mine shows filled in solid square
I suspect that is where you are going wrong. The BR-900 has 64 tracks. But Tr1V1 is only one of those tracks. If you've recorded to several tracks and you want to burn a CD containing a mix of those tracks, then you must first record a stereo mix in Bounce Mode. Bounce mode mixes the 8 currently-selected tracks and records them to a pair of tracks of your choosing. You can then specify that pair of tracks as the source when you burn your CD.
For example, let's say you've recorded acoustic guitar to Tr1v1, bass guitar to Tr2v1, lead vocal on Tr3v1, backing vocals on Tr4v1, and piano (in stereo) on tracks Tr5v1 and Tr6v1. You would then enter Bounce Mode, adjust all of the faders and pan settings for the desired mix, and record it to, say, Tr7v8 and Tr8v8. At step 5 in the instructions for burning a CD, you'd set the cursor on the first '1' in "Tr 1V1" and turn the VALUE wheel until it reads "Tr78
V1". Then you'd move the cursor to the '1' after the 'V' and turn the VALUE wheel until it reads "Tr78V8
", which is the location of your mix in this example.
Instructions for Bounce Mode are on pages 58 and 59. Step 6 of those instructions is where you specify the pair of empty tracks onto which you want to record your mix. You simply move the cursor to that part of the display, then turn the VALUE wheel to change the numbers to the track pair and v-track number you want (78V8, for example).
Also, you should read the following page to get a better understanding of v-tracks: http://songcrafters.org/64guitars/BR/Tutorials/V-Tracks_and_Bouncing.html