manually duplicate serialized block

Maybe not so much an issue, but just something I'm wondering about.

Say, I have a block like this:

<!-- wp:acf/files {
    "id":"block_5f5f66a404b23",
    "name":"acf/files",
    "data": { 
        "files_0_file":8460,
        "_files_0_file":"field_5f3e4591bd4e6",
        "files_0_filename":"My first file",
        "_files_0_filename":"field_5f46b891c44ef",
        "files_1_file":920,"_files_1_file":"field_5f3e4591bd4e6",
        "files_1_filename":"My second file",
        "_files_1_filename":"field_5f46b891c44ef",
        "files":2,"_files":"field_5f3e4578bd4e5"
    },
    "mode":"edit"
} /-->

But I would like to duplicate it manually, so my HTML code will look like this:

<!-- wp:acf/files {
    "id":"block_5f5f66a404b23",
    "name":"acf/files",
    "data": { 
        ...
    },
    "mode":"edit"
} /-->
<!-- wp:acf/files {
    "id":"block_5f5f66a404b23",
    "name":"acf/files",
    "data": { 
        ...
    },
    "mode":"edit"
} /-->

Now I end up with 2 blocks with the same ID. If I make changes to the second block, they are not reflected on the front-end, I guess because the 2 blocks share the same ID. So if I wanted to duplicate a block like this, can I just update the ID with anything I like (as long as I know it is unique)?

So for example: will this work, without any additional complications?

<!-- wp:acf/files {
    "id":"block_5f5f66a404b23",
    "name":"acf/files",
    "data": { 
        ...
    },
    "mode":"edit"
} /-->
<!-- wp:acf/files {
    "id":"block_my_own_unique_id",
    "name":"acf/files",
    "data": { 
        ...
    },
    "mode":"edit"
} /-->

The issue only provides serialized wp:acf/files block examples and does not name repository files or tests. Start by reproducing the two-block content in WordPress with ACF, then inspect the block serialization and rendering behavior. Done means documenting whether manually changing the block ID is supported and identifying any required related values.