LEC : Unmapped Points issue

Hi ,

We are using conformal software Version 7.1 to perform LEC check.
we used netlists ( VQM )  to compare the Logic equivalences. Both the netlists are generated using synplify tool. When compared between these two netlists we could see warnings Unmapped points due to DLAT's ( D LATCHES ).

Few among the warning messages are extracted and shown below.

unmapped point (unreachable: all paths to outputs are blocked):
(G) 9404 DLAT /sclrsclrb2_ebus_top_ebus_slave_to_gms_top_v2_ebus_controller_TIMEOUT_ERR_1_sqmuxa_0_a3_0_a2_i_o2_4_a_s_cZ/lc_ff

Unmapped point (unreachable: all paths to outputs are blocked):
(R) 9408 DLAT /G_4029_cZ/lc_ff.

Unmapped point (unreachable: all paths to outputs are blocked):
(G) 9409 DLAT /sclrsclrb2_ebus_top_ebus_slave_to_gms_top_v2_ebus_controller_TIMEOUT_ERR_1_sqmuxa_0_a3_0_a2_i_o2_a_cZ/lc_ff

Unmapped point (unreachable: all paths to outputs are blocked):
(R) 9409 DLAT /G_4029_a_cZ/lc_ff

In the warning messages mentioned above,
1, G refers to golden & R refers to Revised netlists.
2, Lc_ff refers to technology specific DFF intance name.

We observed that, DLAT's are araised due to CLK pins of the instanced DFF  are grounded. lc_ff is an instance name of the DFF ( Technology Specific )

Based on this we have following queries:-

1, Are this messages are valid warnings?
2, Is there any approach to reduce or eliminate these warning messages?

Kindly help us about this issue.

Thanks,
Dinakaran.R