So long time I had not been using this reposition command. Thanks for you screen shots, now it's easier to understand.
I read in Altium website that this command works as follows: you choose some components in the schematic, then launch reposition command in PCB and now you can move selected components one by one. More info here: https://www.altium.com/documentation...cecomponent-ad
But still this command is used to reposition, not to place components, right? So if I understand it correctly, it works for all the components that you had already placed in your board before
using this command. And since you deleted R3 from PCB, then you cannot reposition it. First you need to place it again and then use reposition.
Please correct me if I'm wrong, but I've made a test schematic and PCB, transferred data from schematic to PCB and when the components are placed = I can use reposition command. When I remove on of them = I can't reposition that removed component.
For schematic and PCB sync, just do as I said in my previous post:
1. Go to schematic.
2. Menu Design - Update PCB.
3. Now ECO window should appear and just click on execute