求助：关于逻辑图生成pcb的问题

LCconan

逻辑图第一次进行ECO TO PCB 没有任何错误和警号，但是我什么都不改再点一次ECO TO PCB就会出现很多警告：
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Line 15 , Section *DEL_ATTRIBUTE*
"Comment"
! Q  B. H4 I3 v+ L* ^8 ]* WARNING: Processing command to delete attribute "Comment" from Component J2.
! y5 P9 W: ?9 B*          The attribute is also inherited from Decal AUD_JACK_6PIN.
& e: @3 O6 |. s7 y/ `*          The change is not fully reconciled for cases where the schematic
*          does not support hierarchical attributes.
Line 17 , Section *DEL_ATTRIBUTE*
3 k- w& A9 `0 {* |"Comment"
* WARNING: Processing command to delete attribute "Comment" from Component BT1.
*          The attribute is also inherited from Decal HB414--II06E(RTC).
*          The change is not fully reconciled for cases where the schematic
*          does not support hierarchical attributes.
) |0 L0 ], j2 H! Z7 ]Line 19 , Section *DEL_ATTRIBUTE*
"Comment"
* WARNING: Processing command to delete attribute "Comment" from Component J5.
*          The attribute is also inherited from Decal BAT_HEADER1.
*          The change is not fully reconciled for cases where the schematic
+ N7 w4 I. X; B*          does not support hierarchical attributes.

警告有700多个，但都是像上面一样的，想请教是什么原因
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