Click on the down arrow in the config column and select the child there.
That is for the part configuration. It only has the one. The issue is the assembly derived configurations are missing.
look for SPR 1053541 (fixed in SW2018 SP1) > Hotfix available for SW2017 SP5 S-074266
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A hotfix is available for SOLIDWORKS® 2017 SP5 that addresses the following issues :
• SPR#1053541: Derived configurations (sub configurations) are not visible in Modify Configurations and Insert Component window in SW 2017 SP5 if file was saved (created) in SW 2017 SP1, SP2, SP3
• SPR#1058118: Inserting a Toolbox screw over countersunk hole, corrupts the mates of the part over which the toolbox component is being placed
• SPR#1058303: An assembly mirrored feature disappears when you switch to assembly drawing.
The hotfix is included in the attachment.
For other release fixes, review SPRs individually.
Hotfix applied and now working well.
it did not, but I appreciate the help. I ended up dumping and reinstalling.