How do I edit family relationships?

Problem is, there are several factors that help or block it.

First is Age. In order to make them siblings, they should all be the same age. IE: All Young Adult, or all Teen, or all Adult.

Second, you can't edit their relationships in CAS if they already HAVE a relationship. That's why you're getting "Cannot edit pre-existing sims".  You'll need to completely delete their existing relationship before you can assign a new one.

If you're getting only the option for Father/Son, then they are different ages.

So, do it like this...  Make sure they're all in the same household (if they're not already). Delete ANY existing relationships they have. MCCC is easiest for this. MCCC/Relationships/Delete Relationship.  This will remove all sibling tags also.

Then, take the household into CAS, make them all the same age, and you'll then be able to use CAS to make them siblings.  You can always use MCCC to cheat their relationship levels and ages back to what you want later.

ThePsycho
____________________________________________________________

＊Accept as Solution button - If a post answers your question please let everyone know by hitting this button.
＊Me Too button - 'Me Too' helps track how many players are also experiencing that issue. Definitely make use of this button.
＊XP button - Say Kudos and help players 'Level Up' by giving them XP for helpful posts.

The 4 of them are all adults (not young adults) and I got the "father/son" option from making Lazlo older or younger. I'm hesitant to delete all of Lazlo's relationships but I'll make a backup save and give it a go. I just don't want to have to edit every sim's relationship again ☹️ . I just don't understand how the game hasn't gone "Okay so these 3 are all siblings and Lazlo has just been made to be one of their brothers so that means they're all siblings." I didn't think, for example, sim1 could be siblings with sim2 but then not be related at all to sim2's other siblings. I'm guessing the game is confused and it's a bug?

I'm going to give your suggestion a try at some point today then I'll let you know if it worked or not.

Thank you!

@SianAF148Well, you don't have to delete ALL their relationships, just the ones you want to re-do. So, if you want to make Lazlo the sibling of Pascal, you need to delete the existing relationship between those two before you can assign the new one. The existing relationship is blocking it. Same with the others.

The relationships are on a one-to-one basis.  For example, if SIM A and SIM B are siblings, and you make SIM B the sibling of SIM C, that WON'T automatically make SIM A the sibling of SIM C.  You'll have to do that separately. Since you have four sims you want to be all full siblings, you'll have to delete the relationships between all four, pull them into cas together and re-assign them to be siblings.  It'll work.

It would be easiest to do them all at once. Pull everyone into the same household, delete all their relationships with each other, pull them all into CAS and re-assign everything at once. Parents and all. This will update the Family Tree properly also.

@Psychotps so I sort of did that, sort of didn't. I tried deleting the relationships using MCCC however it wiped every single sim from the person's relationships and said it removed the family relations but I looked on their simology or whatever it's called and the family connections were still there. Still tried to edit the relationships in CAS but I still had the same problem.

So instead I saved each individual sim then deleted all 4 of them from the save and then recreated them together. It solved the issue of them not all being siblings, except it created an even bigger problem. The children of each of those siblings could now only be household members not sons or daughters. So I backed out of that without saving. I tried the ID relationshipbit cheat again and nothing, So unless there's anything else I can do to sort this out without purging the whole save and starting each family from scratch (there's like 30+ sims so I really don't want to do that), then I guess I'll just have to pretend I didn't see their dysfunctional family tree.

Is there anything else you could suggest?

UPDATE: Since Lazlo was the problem I deleted his entire family from the save then put him into the save again and then got the 4 Curious siblings together in CAS and as soon as I set Jenny and Lazlo as siblings, Lazlo automatically became the brother of the other two.

Thank you @Psychotps for your help and suggestions though.

@SianAF148

I'm not sure how all the relationships got deleted but if you want to just delete a single one between two sims, do it like this...

If you want to delete the relationship between SIM A and SIM B, make sure SIM A is active, click on SIM A and go into MC Command Center/Relationships/Delete Relationship.

You'll get a dialog showing pictures of all the sims that sim has any relationship with. Click ONLY on the one sim you want to delete the relationship with. They'll disappear from the dialog. Then click on the X in the upper-right.

I did it with one of mine. My sim has a daughter as well as a spouse. I deleted the relationship with her daughter, clicked on the sim and went into MC Command Center/Modify household in CAS. The child was no longer listed as Daughter. I made the child her daughter again and it worked fine. The child still showed both parents in simology and the parent didn't lose any other relationships.

Although I did have to "Greet" the child again and the child showed up as "Daughter".

Hi!

I have the same problem. But what is MCCC?

// Jessica