flux_extract_lora.py need update for extracting FLUX SRPO model

[FurkanGozukara]

I hope you can fix this @kohya-ss

Microsoft Windows [Version 10.0.26200.6901]
(c) Microsoft Corporation. All rights reserved.

F:\Kohya_FLUX_DreamBooth_LoRA_v31\kohya_ss\sd-scripts>git status
On branch sd3
Your branch is up to date with 'origin/sd3'.

nothing to commit, working tree clean

F:\Kohya_FLUX_DreamBooth_LoRA_v31\kohya_ss\sd-scripts>git log -1
commit 5e366acda4789af215a820b1ac866c214f6c9f34 (HEAD -> sd3, origin/sd3)
Merge: 5462a6b e64dc05
Author: Kohya S. <52813779+kohya-ss@users.noreply.github.com>
Date:   Wed Oct 1 21:03:12 2025 +0900

    Merge pull request #2003 from laolongboy/sd3-dev

    Fix missing parameters in model conversion script

F:\Kohya_FLUX_DreamBooth_LoRA_v31\kohya_ss\sd-scripts>

Currently below command working.

23:47:34-475360 INFO     Executing command: F:\Kohya_FLUX_DreamBooth_LoRA_v31\kohya_ss\venv\Scripts\python.exe
                         F:/Kohya_FLUX_DreamBooth_LoRA_v31/kohya_ss/sd-scripts/networks/flux_extract_lora.py --model_org
                         F:/SwarmUI_Model_Downloader_v81/SwarmUI/Models/diffusion_models/FLUX_Dev.safetensors
                         --model_tuned
                         F:/SwarmUI_Model_Downloader_v81/SwarmUI/Models/diffusion_models/256_img_BS_1-000070.safetensors
                         --save_to
                         F:/SwarmUI_Model_Downloader_v81/SwarmUI/Models/Lora/FLUX_SRPO_LoRA_Extract.safetensors --dim
                         640 --device cpu --clamp_quantile 1 --save_precision bf16
  2%|█▌                                                                                | 6/304 [00:31<26:59,  5.43s/it]

But when I provide FLUX SRPO model as a base model and fine tuned model nothing happens it saves 1kb file

23:43:46-497943 INFO     Executing command: F:\Kohya_FLUX_DreamBooth_LoRA_v31\kohya_ss\venv\Scripts\python.exe
                         F:/Kohya_FLUX_DreamBooth_LoRA_v31/kohya_ss/sd-scripts/networks/flux_extract_lora.py --model_org
                         F:/SwarmUI_Model_Downloader_v81/SwarmUI/Models/diffusion_models/FLUX-SRPO-bf16.safetensors
                         --model_tuned
                         F:/SwarmUI_Model_Downloader_v81/SwarmUI/Models/diffusion_models/FLUX_SRPO_DreamBooth.safetensor
                         s --save_to
                         F:/SwarmUI_Model_Downloader_v81/SwarmUI/Models/Lora/FLUX_SRPO_LoRA_Extract.safetensors --dim
                         640 --device cpu --clamp_quantile 1 --save_precision bf16
0it [00:00, ?it/s]
2025-10-22 23:43:49 INFO     LoRA weights saved to                                              flux_extract_lora.py:149
                             F:/SwarmUI_Model_Downloader_v81/SwarmUI/Models/Lora/FLUX_SRPO_LoRA
                             _Extract.safetensors