Not quite sure if this is a BOINC problem or a GRIDCOIN ONE.

Not quite sure if this is a BOINC problem or a GridCoin one. A substantial change to one of the machines, such that it is no longer recognised as the same computer would be one way to resolve this but certainly not the most elegant way. If I come up with something better I will post.

When I cloned it, it was a substantial change. Every single component was dramatically different.

Who or what is recognising it as the same machine? Is this stored at the project, at the gridcoin pool, or on my machine? Would reformatting the machine help? (Not that big a deal since one of them only runs Boinc).

I believe that substantial change is Windows to Linux or Intel to AMD - not just Win7 to Win10 or Ryzen 5 to Ryzen 7.

When I cloned it, it was a substantial change. Every single component was dramatically different.

Who or what is recognising it as the same machine? Is this stored at the project, at the gridcoin pool, or on my machine? Would reformatting the machine help? (Not that big a deal since one of them only runs Boinc).

I believe that substantial change is Windows to Linux or Intel to AMD - not just Win7 to Win10 or Ryzen 5 to Ryzen 7.

The CPU changed from an Intel i5 to a Ryzen 9.

That should have done it.

This is the info page about cpid: Cross-project_identification

Results from a web search suggest that using a different email address may give you a different cpid.

For the machine you need to change the CPID to the correct one, just edit its client_state.xml file and change the CPID in the <external_cpid>{CPID}</external_cpid> field and save the file.
The external CPID field is the one that the stats sites and GridPool pay attention to.

For the machine you need to change the CPID to the correct one, just edit its client_state.xml file and change the CPID in the <external_cpid>{CPID}</external_cpid> field and save the file.
The external CPID field is the one that the stats sites and GridPool pay attention to.

I've just checked one of the offending machines, and that field is blank. Can I just put anything in there? I suppose I could make something that looks similar to what they should be.

The file has:
<cross_project_id>d8ffd2cc24b930b1c79b0041a5f21fc5</cross_project_id>
<external_cpid></external_cpid>

But grcpool.com shows that machine as dd731609735947bc6aed4d89a2205adc

I just went through this as un-accountably, einstein had not put a value in the extern_cpid field

The value in there is the one for all your systems, the one that starts with 53...

https://www.gridcoinstats.eu/cpid/53ed9d9b7d568cb7eb1ccc25a7dc4492

Hopefully you do not have different external CPIDs which is a PITA to fix.

[edit] I do not see any of your system addresses. Either you have another account or the systems have not propagated their CPID into the eu stats table. if you put in my name you will see 5 active addresses each corresponding to a system CPID and under that the four main projects I work on. You should have a single external CPID good for all your work.

Gridcoin depends on a single CPID address across all projects. That address is the one that goes into external_cpid in every host computers client_state.xml file.

The other cpid addresses are for identifying each host for only that particular project in EACH project section of the client_state. Those addresses have nothing to do with gridcoin. They are only important for the individual host stats at the 3rd party aggregation websites or the projects websites.

As Joseph points out the CPID you need to concentrate on is the one starting with 53ed . . . that needs to be put into every <external_cpid> field in every project section in the client state file. The easiest way is to use the global Find and Replace function in a file editor.

Yes, Einstein is notorious for leaving the <external_cpid> field blank and unfilled because they use outdated server software. Updated server software fills that in and properly propagates it to all the project fields in the client state file.