You may have to laod the DCH cards.  Go to table DCHINV and find the index number (first column) for the new DCH cards added.  Then type

>mapci;mtc;pm;post lgc X;dch;post Y

where X is the LGC number and Y is the DCH number from DCHINV.

Then type

>bsy    <---- to busy the DCH
>loadpm     <---- to load the DCH
>rts    <----- to RTS the DCH

The DCH is considered a separate XPM and must be loaded separately.  Loading the LGCI does not load this card.  However, since you are adding new DCH cards, the DMS may want to remap your BRI originators to the new DCH cards for load balancing.  So reloading the LGCI (both sides) may be required.  It certainly can't hurt.  As a minimum since table LTCPSINV was changed, you should reset (PMRESET) each side of the LGCI since the static data is not always automatically updated.  You did BSY then RTS the LGCI which accomplishes the static data update, but I would do it formally with PMRESET.

Ignore table ISGTDM since it is a read only table automatically populated via LNINV.  However, you will have to datafill ISGDEF for 3 of your 4 DCHs.  The reason the fourth DCH is not put into table ISGDEF is because it will be used as a hot spare.

If you continue to have problems, I would change links 13 and 15 to NILTYPE, reset the LGCI, then change them back to DCH, then PMRESET again.

Howdy All,
Well I figured it out and didn't feel bad as Genband (Nortel) didn't have a direct answer.  They did supply some good IM's that clued me in.

So you have to run a QSCONN on the links you want to change.  Delete ISDN entries from LTMAP then turn them to HASU in LNINV.  Reverse this at the end and they will come back to life with sets still programed.

Next OFFL the LCME and LGCI.  Delete the links in LCMINV, change to DCH in LTCPSINV, then add in DCHINV and ISGDEF tuples.

Now pull out the DS30 connecters for the DS30 links you changed and move those connecters to the next working DS30.  Move the connecter on that DS30 down and so on.  So if you had links 18 17 16 15 and 14 and were changing 17 to a DCH, you would move 17's DS30 connecter to 16, 16 to 15, 15 to 14, and leave 14's disconnected.  If you have two cables, I had two with connecters A thru F, complete moving all the connecters from cable 1 then cable 2 with your spare connecters being on the second cable.  So E and F from the first cable can end up where A and B of the second cable were.

While you have the LGCI OFFL add your BX02BA cards to the slots for the DS30 links your converting.  Before you seat the card add a fuse for each.  Mine was a cabnitized frame and I didn't have anything to tell me what was what.  I had to pull a fuse I thought was 19 or 17 for LGCI 3 or 4.  It ended up being 19 for LGCI 4 and I made an educated guess on another fuse and pulled it.  From their I figured out the rest of the count for 15, 13, and 3.  Not fun.

Now BSY and LOADPM with a CC before you RTS the LGCI.  Do the same for the LCME.  Just for good mesure I would SWACT the Units back and forth to make sure they don't give you a ISTB with a card list of the BX02BA and/or the X48 cards.  If they do check the BX02 fuse and re-load the units of the LGCI.

Finally go to the DCH level and bring up the links.

Trouble shooting:  For DCH's that won't respond double check the fuse.  For DS30 links that go SYSB double check your DS30 links.  For DCH's that go SYSB do a LOADPM with a CC.

Hope this helps someone as this took two weeks, all of them nights, to figure out!