DR12 and LED upgrades

I am currently the electrical contractor in the Orange County CA area. The church that I service has a dimming system as follows:

2 - DR12 racks

2 - Control modules CMed w/extended Architectural

1 - LCD Control station

15 - D20E Universal Dimming Modules

The system uses track lighting for illumination with halogen lamps currently. We have tried some Halo L807HD LED fixtures and they dim correctly. We have also tried some Janmar 714DL-48XLED with Harvard CLK33 1000S-UNI-B drivers 500-1000 ma which blink "ON-OFF" constantly when turned on even at full brightness.

My questions are:

Any known track fixtures OK with these modules (other than the Halo I tested?)

Should I .... and can I ..... install the ELV10 dimmers (or do they only work in DRd racks?)

Can I .... and how .... can we upgrade this DR12 system to a DRd system or change to something more modern?

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